On May 18,1980, Mount St. Helens in the state of Washington erupted with the force of a hydrogen bomb. The volcano had been dormant for over 120 years, but now 57 people were dead; forests and lakes were totally destroyed, including nearby Spirit Lake, which became a mud hole. The blast leveled trees in areas over 10 miles from the crater and ash deposits suffocated life on the mountain. However, within weeks, mammals that had taken shelter underground started to appear in the area, and now, over thirty years later, many areas of the mountain are colonized with a large variety of plant and animal life. How does an area move from a sterile, barren wilderness to one full of life

Answers

Answer 1

Answer:

The correct answer is - Ecological Succession.

Explanation:

Ecological succession is a change in the species or biodiversity over time by the increase in the vegetation or growth of the community. This takes place after a natural disaster or any event that causes nudation or complete removal of species or comunities from an area such as volcanic eruption.

It starts with nudation then invaded with primary successors and then ecological conditions lead to invading more species and the third stage would be competition and interaction between a component of the species and vegetation then stable.


Related Questions

What do the junctions of a cladogram represent?
Answer:​

Answers

Answer

A cladogram is a visual chart orrepresentation of cladistics. They consist of horizontal or vertical lines connecting various organisms. These different lines branch off from a common point on the cladogram. These branch points represent a common ancestor shared by the organisms that emanate from the branch point.

The junctions of a cladogram represent the branching points in evolutionary relationships between different groups of organisms, and the cladogram is a type of evolutionary tree.

What is the significance of the junction in the cladogram?

The junctions in a cladogram can also be used to infer the evolutionary relationships between different groups of organisms based on the pattern of shared derived characters, and the branching points in a cladogram represent the divergence of lineages. The presence of a derived character in multiple groups at a junction in a cladogram indicates that the character was present in the ancestral group, and this is widely used in evolutionary biology.

Hence, the junctions of a cladogram represent the branching points in evolutionary relationships between different groups of organisms, and the cladogram is a type of evolutionary tree.

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explain in your words indigenous knowledge​

Answers

Answer:

is the unique knowledge confined to a particular culture or society. It is also known as local knowledge, folk knowledge, people's knowledge, traditional wisdom or traditional science.

Explanation:

crossing two genetically different individuals

A.) inbreeding
B.) cloning
C.) selective breeding
D.) hybridization​

Answers

the answer is hybridization.

If a codon has the nucleotide sequence UGA, what does the corresponding
anticodon have as its sequence?

A) UGT
OB) UGA
C) ACT
D) ACU

Answers

It should be c if not then d

How does the addition of rubber bands affect the range of motion of the joint

Answers

The addition of more rubber bands shortened the range of motion for the joint. You can tellbecause it became more harder to move the more rubber bands you put. D)The biceps brachii and the pectoralis major muscles both cross the shoulder.

How does a decrease in abiotic resources impact the population growth in an ecosystem?

A. The population size will increase
B. The population size will decrease
C. The population size will not change

Answers

Answer:

B. The population size will decrease

Explanation:

Abiotic factors may include temperature, sunlight and water. If conditions are too cold for the organisms living there, they may perish. If the amount of sunlight decreases, plants will not be able to produce enough glucose through photosynthesis. If the amount of water decreases plants may bot have enough water to photosynthesise and animals will have to compete for water.

Temperature, sunlight, and water are abiotic. Organisms may die in frigid environments. Therefore, option (B) is correct answer.

What are abiotic resources?

Abiotic and biotic environmental factors fall into the category of population-influencing factors. The non-living physical and chemical components that make up an ecosystem, such as temperature, pH, sunlight, shelter, and day length, are referred to as abiotic variables.

Cold conditions can cause the death of organisms. If sunlight dwindles, photosynthesis cannot produce enough glucose. Lack of water may make it difficult for plants to photosynthesize, forcing animals to compete for it.

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What aspect of basterica makes recombainat dna technology effective?
A.bacteria have no dna
B Baxter’s have insulin genes
B.bacteria reproduce very quickly
D.bacteria only have mRNA

Answers

The answer is C. (The second B).

Because, Bacteria are key to recombinant DNA technology because of one simple fact. The reproduce rapidly.

Which of these is true for a fetus by the end of the first trimester of fetal
development?
A. Its weight is half what it will be at birth.
B. Its lungs are fully developed.
O C. Its placenta has served its purpose.
.
D. Its external sex organs have formed.

Answers

Answer:

the answer is A :)!!!!!!!!!

Which trophic level does the stingray belong to?

Answers

Answer:

Secondary consumers with a TL <4.00 represented 84% of the species examined, with the remaining 12 species (16%) classified as tertiary consumers (TL ≥4.00). Tertiary consumers included electric rays (Torpedo, 3 spp. and Hypnos, 1 sp.), butterfly rays (Gymnura, 4 spp.), stingrays (2 spp.)

Explanation:

I think but sorry if it was wrong.

4.3.2 Test (CST): Earth's Plates Question 4 of 6 The pale colors on the map show how likely it is that each area will experience a high-magnitude earthquake. The dark red and black dots show which areas have the highest human population densities. USGS B A А Most likely C pls help​

Answers

Answer: Region C, in the California area

Explanation:

This area is at the highest risk for earthquakes according to the color key on the map (red being the most vunerable, green being the least), and has a high population density. Compared to other regions, citizens in region C should be most prepared for earthquakes.

Region C, in the California area will experience a high-magnitude earthquake.

What is Earthquake?

It's a sudden violent vibrations of high intensity of the ground which causes great destruction, due to movements within the Earth's crust.

Given area is at the highest risk for earthquakes ,according to the color key on the map and has a high population density. When compared with other regions, citizens residing in region C should be most prepared for earthquakes.

Thus, region C is most likely to have Earthquake.

Learn more about Earthquake.

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someone pls help w this

Answers

Answer:

B.

Explanation:

HELPPP!!!! AG CLASS
Complete the following sentence.

The design element of ____________ evokes the sense of touch, conveying coarseness, smoothness, and complexity through light, shadow, and pattern.

Answers

Answer:

I believe the ans is texture.

I need help to make an acronym with these words

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species


like, for example, "please excuse my dear aunt sally"

(parenthesis, exponents, multiplication, division, addition, subtraction.

Answers

Answer:

Dear kayla please come obediently for Gary's safety

What percentage of the offspring will be purebred dominant? (Help, if you responded thank you)

Answers

Answer:

25%

Explanation:

it is only 25% percent because it said purebred which means two identical alleles and YY was the only purebred dominant trait. It is also 25% because you split it up into fours. Its like splitting up a dollar. One trait means 25% two traits 50% three traits 75% 4 traits 100%. hope this helps

PLEASE HELP TO SOLVE IT I HAVE AN EXAM !!!
An organism has 2 chromosomes in its cells (the diploid number is 2). Calculate the number of chromosomes in a cell in the 5th generation if egg and sperm cells were diploid

Answers

Answer:

64

Explanation:

Since the cell has two chromosomes and a diploid number of 2, in each generation, the cell doubles. In the first generation, we have two cells, in the second generation, we have 2 × 2 cells ,in the third generation, we have 2 × 2 × 2 cells. It follows that we have 2ⁿ cells in each generation where n represents the generation.

So, in the fifth generation, n = 5, so the number of cells is 2⁵ =  32.

Since we have 2 chromosomes in each cell, the number of chromosomes in the 32 cells in the 5th generation is 2 × 32 = 64 chromosomes.

Lewis and Benny have been studying about the rate of photosynthesis in plants

and are planning an investigation. They each conducted research and wrote

down their observations. They made a list of investigative steps: drawn

conclusions, measure, create a hypothesis, and interpret data. Which step should

occur first in Lewis and Benny's investigation?

interpreting data

writing a conclusion

creating a hypothesis

taking measurements

Answers

Answer:

creating a hypothesis

Explanation:

The scientific method is a logical and systematic procedure used to understand phenomena from the real world. The scientific method involves several sequential steps: 1-to observe and pose a question on a particular phenomenon from the real world, 2-to raise a hypothesis or 'explanation' to these observations (this explanation allows to obtain a predictive pattern in order to explain further observations), 3-to test the hypothesis by experimental procedures or further empirical observations, 4-to analyze and interpret data (results), and 5- to reach to a conclusion that confirms or rejects the working hypothesis. A good hypothesis must be 1-plausible (i.e., it is scientifically adequate and appropriate), 2-falsifiable (i.e., it may have a negative answer) and 3-testable (i.e., it must be proven by scientific data).

can you please help me ​

Answers

Answer: 41. primary. 42. temporary storage. 43. secondary. brainliest?

Explanation:

Complete the following sentence.

The animal (_____) industry provides nearly 2 million American jobs.

Answers

Answer:

livestock

Explanation:

Answer:

agriculture

Explanation:

Edge Animal systems

3
Scientists discovered a new organism that thrives on the leaves of palm trees. The organism
is eukaryotic, unicellular, and reproduces through binary fission. It also makes its own food
through photosynthesis. This organism's characteristics most closely match the characteristics
of which Kingdom?
(2 points)

Answers

Answer:

Plant

Explanation:

The organism characteristics most closely match to characteristics of plant kingdom

The EKG is hooked up, and Mr. M's trace looks very abnormal. His heart rate is low. The T wave, which indicates repolarization of the ventricles, is unusually large and pointed and the QRS wave, which indicates the depolarization impulse’s passage through the ventricles, is widened or slowed. "That's a classic EKG for hyperkalemia (high blood potassium)!" The doctor gives Mr. M an injection of calcium gluconate. Calcium ions block the Na+ channels on nerve and muscle cells. How will this help counteract the effects of high blood K+? g

Answers

Answer:

This question lacks options, options are: Mr. M's cells are depolarizing too easily. Blocking Nat channels will make it harder for them to depolarize, bringing their sensitivity back to normal O Mr. M has too little K* leaving his cells, so we need to block the Nat channels so the Kt channels can stay open and his cells can repolarize properly. Mr. M has too little K* leaving his cells, so we need to block the Nat channels so the Na /K+ ATPase can move Kt out of the cell effectively O Blocking Na* channels cannot help- it will only make his cells fire less, and he already has a weak heartbeat. Mr. M's cells are not repolarizing properly. Blocking Nat channels will help them repolarize normally, bringing their resting potential back to normal.

The correct answer is ''Mr. M's cells are depolarizing too easily. Blocking Na+ channels will make it harder for them to depolarize, bringing their sensitivity back to normal.''

Explanation:

Calcium administration is an emerging treatment modality aimed at restoring the transmembrane electrical gradient of cardiac myocytes. It probably achieves this goal by reducing the resting membrane potential of cells. Calcium antagonizes the effect of hyperkalemia on cardiac conduction, that is, it antagonizes the effects of K on the heart. Its onset of action is immediate, in a few minutes. Calcium gluconate antagonizes the excitability of the cardiac membrane, that is, it decreases the excitability of the membrane and it does not affect serum levels, it is generally accepted that calcium should be administered when there are ECG changes associated with hyperkalemia.

Which statement best describes ecological succession?
A. It is always caused by human intervention.
B. It occurs after a disturbance.
C. It never occurs in a predictable pattern.
D. It is a series of rapid changes in an ecosystem.

Answers

Answer:

The statement which best describes about ecological succession is that the one which states that It is a series of 'rapid changes' in an ecosystem.

Ecological succession is caused by human intervention. Therefore, the correct statement is option B.

What is ecological succession?

Ecological succession is a natural process that takes place after an ecosystem is disturbed by something like a fire, flood, or human activity. It is an anticipated example of changes in the species synthesis and local area design of an environment over the long haul.

Ecological succession is a process in which the ecosystem's physical and biological characteristics undergo a series of gradual shifts over many years or even centuries.

From the pioneer stage to the climax stage, where the ecosystem reaches a relatively stable state, ecological succession involves a series of stages. Different species of plants and animals replace one another during ecological succession, resulting in shifts in the ecosystem's physical and biological conditions.

Therefore, ecological succession is caused due to human intervention where the ecosystem is disturbed by a fire, flood, or human activity.

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Vertebrates include fish, amphibians, reptiles, birds, and mammals. Analyze the common characteristics of reptiles and explain how they differ from mammals.

Answers

There are some differences, though. Mammals have hair all over their bodies, while reptiles have scales. Mammals have live births and produce milk for their young, while reptiles lay eggs. Reptiles have only three-chambered hearts, mammals have four

Answer:

there are some differences though. ...

Explanation:

During prophesy I of meiosis, these pairs form a tetras in a process called _.

Answers

Synapsis
Hope it helps

n 2000, Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found. The fossilized dinosaur was sticking out of the wall of a canyon in Montana. Many scientists were eager to study the fossils.

Dr. Mary Schweitzer got one of the leg bones to analyze. Dr. Schweitzer’s assistant dissolved the bones in acid and discovered that some soft tissue had survived even after 68 million years. The discovery was a shock to the scientific community. No one had ever found such old tissues.

Before laying eggs, female birds store calcium inside their bones that they will need to make eggshells. This layer of bone is called medullary bone. In the T. rex leg bone, Dr. Schweitzer found tissue just like the medullary bone of birds. The dinosaur was a female! If Dr. Schweitzer’s hypothesis is right, she is the first scientist to identify the sex of a T. rex. Which organ system includes the bones?

A. skeletal system
B. muscular system
C. reproductive system
D. integumentary system

Answers

The skeletal system! Your bones make up your skeleton.

Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found and is the first scientist to identify the gender of a T. rex, the organ system is the skeletal system, as it includes the bones that are present in Option A.

What is the significance of the skeletal system?

The skeletal system, which provides structural support, is important for animals as it protects vital organs, supports muscles, and helps in movement. Also, the bones synthesize the blood cells, such as the red blood cells, which carry nutrients and oxygen, it also maintains the individual's balance and posture and provides a veil over the fossil records.

Hence, Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found and is the first scientist to identify the gender of a T. rex, the organ system is the skeletal system, as it includes the bones that are present in Option A.

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What process is responsible for satisfying the third tenet of the Cell Theory, which states that new cells originate from other living cells?

Answers

Answer:

Cell division

Explanation:

Everything starts from the union of a sperm and an egg, which gives rise to a cell, which has to become an adult organism. For this, this cell divides in such a way that in each division exactly the same genetic information is maintained. The cell is the reproductive unit of living beings. Throughout its life the cells are nourished and increase in size. When a cell reaches the appropriate size, it usually gives rise to two cells similar to the original cell. Cell Theory is one of the fundamental bases of biology and it is where the base of the constitution of living beings and the fundamental role of cells in them is summarized. It is formulated in the first place thanks to observations and formulations of Theodor Schwann ( physiologist) and Matthias Schleiden (botanist).The current third principle of cell theory, formulates that a cell comes from another cell, by cell division or by formation from stem cells. The oldest and most primitive cells in the world are prokaryotes (without a cell nucleus).

Which statement best describes the relationship that exists among proteins, DNA, and cells?
O Proteins combine to produce cells, which produce DNA.
O Proteins are made up of DNA, which determines the cells that are produced.
O DNA is made up of lipids, which tell a cell how to function.
O Cells contain DNA, which codes for the production of proteins.

Answers

Explanation:

chloroplast has dna cells

Answer:

they help keep cells working and give us different patterns

Explanation:

PLS SOMEONE HELP I HAVE AN HOUR ITS DUE!

Answers

Answer:

100%

Explanation:

Use a Punnett square to facilitate calculating the possibility.

       y        y

Y    Yy      Yy

Y    Yy      Yy

Y is the white teeth trait, which is dominant. So, there is a 100% chance, though heterozygous.

The ability of an ecosystem to support life declines sharply after a population crash
among some of the organisms. A population crash among organisms with which
characteristic could have caused the sharpest decline?
A hibernation during the winter
B mobility on land and in the air
C conversion of sunlight into food energy
D different fur coloring in summer and winter

Answers

Answer:

c

Explanation: all other traits are irrelevant and could reply to any part o the food chain, c means that the plats have dropped, meaning that the things that eat the plants wot be able to eat the plants, (primary consumers)and the secondary consumers wont be able to eat the primary consumers,then the tertiary consumers wont be able to eat the secondary consumers. In simpler terms it would cause a chain reaction that would detonate the whole foodchain.

PLEASE ANSWER ILL GIVE BRAINLIEST

Answers

Answer: letter C brainliest?

Explanation:

From where does the fern get the carbon dioxide required for photosynthesis?

Answers

Answer: From the air.

Explanation: On the surface of the leaves of the plants there are a large number of tiny pores known as stomata or stoma. For photosynthesis, green plants take carbon dioxide from the air. The carbon dioxide enters the leaves of the plant through the stomata present on their surface.

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