Answer: 1. Sea urchins and sea otters
2. They are prey for carnivores.
3. Sea otters, star fish
Explanation:
Sea urchins and sea otters are carnivores as they eat on the flesh of starfish and sea urchins respectively.
Starfish feed on the kelp forests which are the producers in the food chain and the starfish is the primary consumer and prey for sea urchins. So, starfish and kelp forests are the prey in the marine ecosystem.
Keystone species is the one which controls the population of other inferior species in an ecosystem. Here, sea otters consume sea urchins so the population of sea urchins remained in control Starfish controls the population of kelp forest.
An isotope used for absolute dating has a half-life of 100,000 years. Laboratory analysis of a crystal, which originally formed with only the parent isotope present, is now found to have a parent-to-daughter ratio of 1 :3. How long has it been since the crystal formed? *
A. 33,000 years
B. 50,000 years
C. 200,000 years
D. 300,000 years
Answer:
D.it has been 300,000 years
The following table lists the number and variety of organisms in
four different ecosystems.
Predict what would happen to Ecosystem 3 immediately after a
volcanic eruption.
Answer:
The following table lists that number and variety of organisms in four different. Predict what would happen to Ecosystem 3 immediately after a volcanic eruption. Its biodiversity would decrease ... 395---Add all of the organisms together and divide by the number of ecosystems
Explanation:
Answer:
Its biodiversity would decrease
Explanation:
D
An elementary school science teacher decided to liven up the classroom with a salt-water aquarium. Knowing that salt-water aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ectoproct, a sea star, and several gastropod varieties. Lastly, some vertebrates - a parrotfish and a clownfish - were added. She arranged for daily feedings of copepods and feeder fish.
The teacher was unaware of the difference between suspension feeding and predation. The teacher thought that by providing live copepods (2 mm long) and feeder fish (2 cm long) the dietary needs of all of the organisms would be satisfied. Consequently, which two organisms would have been among the first to starve to death (assuming they lack photosynthetic endosymbionts)?
1. sponges
2. coral animals
3. bivalves
4. sea stars
5. shrimp
Answer:
sponges
Explanation:
because sponges need photosynthesis in order manufacture their food
The organisms namely sponges and coral animals are most likely to starve to death in the lack of photosynthetic endosymbionts. The correct option is 1 and 2.
What are endosymbionts?Endosymbionts are organisms that live in close proximity to another cell or organism.
As sponges are predominantly filter feeders, consuming detritus, plankton, viruses, and bacteria. They also absorb nutrient solution from water directly through their pinacocyte cells.
Due to the lack of photosynthetic endosymbionts the organisms namely sponges and coral animals are most likely to starve.
Thus, the correct option is 1 and 2.
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What element is part of the Alkaline Earth Metals family and located on period 4
Potassium
Bromine
Calcium
Krypton
Answer:
C. Calcium (CA)
Explanation:
other Alkaline Earth metals in period 4 are, beryllium (Be), magnesium (Mg), strontium (Sr), barium (Ba), and radium (Ra)
Answer:
calcium is part of the alkaline earth metals family
Name any three specifications that reduce carbon dioxide expenditure and promote biodiversity in the neighborhood you chose.
Hello. You have not shown the neighborhoods to which the question relates, which makes it impossible for your question to be answered accurately. However, I will try to help you in the best possible way.
The best way to reduce spending on carbon dioxide and increase biodiversity in a neighborhood is to provide tree planting through urban afforestation. A well-wooded neighborhood, it has a lower concentration of carbon dioxide because the plants absorb this gas releasing oxygen in place. In addition, some animals such as birds would attract them, in addition to promoting fruit and shade for the neighborhood.
Answer:
The most ideal way to lessen spending on carbon dioxide and increment biodiversity in an area is to give tree establishing through metropolitan afforestation. A well-lush area, it has a lower centralization of carbon dioxide in light of the fact that the plants assimilate this gas delivering oxygen set up. Likewise, a few creatures, for example, birds would draw in them, as well as advancing products of the soil for the area.
In the image above, what lettered section represents 2 chromosomes, each with 1 chromatid?
Answer:
If you add the picture I can help :)
Explanation:
10. A
biome is a cold, dry
area where the sun barely rises
during winter.
A. coniferous forest
B. temperate deciduous forest
C. grassland
D. tundra
Which of the following is a density dependent limiting factor? NO LINK ANSWERS
A. new construction by humans in environment
B. earthquake
C. a sudden flood in the environment
D. new predator's in the population
Suggest how humans might contribute to a
mass extinction event.
Answer:
Deforestation, hunting, pollution, the introduction of various regions of non-native species, and the widespread transmission of infectious diseases spread through livestock and crops.
Explanation:
Select the correct text in the passage.
One way to improve food security is to avoid food spoilage. Identify the correct ways that Devon reduced food spoilage in the passage.
Devon prepared spaghetti and homemade sauce for dinner. The dinner served up to four people, but only Devon was around to eat it. He brought one serving to his neighbor’s house, and stored the other two servings in the refrigerator. Devon ate one more serving of spaghetti the following day. Later that week, his refrigerator broke and the remaining spaghetti spoiled. He immediately called a repair service and got the refrigerator fixed.
Answer:
Explanation:
The dinner served up to four people, but only Devon was around to eat it
Answer:
1.) Devon prepared spaghetti and homes made sauce for dinner.
2.) he brought one serving to his neighbor's house and stored the other two servings in the refrigerator.
3.) he immediately called a repair service and got the refrigerator fixed.
Explanation:
1.) making homemade sauce for dinner he made last time for it to spoil.
2.) by bringing a servant to his neighbor's house made less amount of food that would spoil.
3.) having the refrigerator fixed prevents more spoiling from happening too early.
In the presence of oxygen, _____ molecules of ATP can be formed during cellular respiration.
A. 36 to 38
B. 19 to 24
C. 2 to 4
D. 63 to 68
E. 38 to 42
Answer:
A
Explanation:
Answer:
A. 36-38
Explanation:
Hope this helps :))
Select the correct answer.
Which of these activities increases the amount of carbon in the atmosphere?
A. animals eating plants
B. burning of fossil fuels
C. fossilization
D. photosynthesis
Reset
Answer:B. burning of fossil fuels
Explanation:
Question 8 (2 points)
Which of the following terms identifies all of the interactions between living and
nonliving things within an area?
1.) ecosystem
2.) food web
3.) energy pyramid
4.) food chain
What is the function of the DNA
Answer:the function is direction to build life
Explanation: i’m smart
Answer:
DNA is a information molecules.
It stores instructions for making other large molecules called proteins
these instructions are stored inside each of our cell.
distribution among 46 long structure called chromosomes
How do B cells know when to make antibodies?
A.) They are alerted by Helper T cells.
B.) They are always making antibodies just in case that pathogen is present.
C.) They are alerted by Macrophages.
D.) B cells will simply find the pathogen in the body and immediately begin making
antibodies to fight the pathogen.
Answer:
A) They are alerted by Helper T cells.
Which of these is NOT a phenotype?
A tall
B short
C zygous
D round
Answer:
I believe that the answer is 'C. zygous'
Explanation:
I hope this helps, have a blessed day.
The option C "zygous" is not a phenotype.
What is a phenotype?Phenotype refers to the physical and observable characteristics of an organism, which are determined by its genotype and influenced by the environment.
Examples of phenotypic traits include height, eye color, hair color, skin color, and other observable features that vary between individuals of the same or different species. Phenotypes can also include physiological traits, such as blood type, or behavioral traits, such as personality traits in humans.
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help plss !! really need help
Answer:
am too young
Explanation:
hope it helps
6N right and 10N & 2N left
How does the presence of cosmic microwave background radiation support the big bang theory?
Check all that are true.
-It shows that here is a faint, leftover energy that is coming from all directions of the universe.
-It shows that the universe used to be smaller with a uniform temperature.
-It shows that the universe is coming back together and will collapse in a massive black hole.
-It shows that all matter and energy in the universe is accelerating.
Answer:
I'm pretty sure that it's B
It shows that the universe used to be smaller with a uniform temperature. Therefore, option (B) is correct.
What is cosmic microwave background radiation?According to the theory of the Big Bang, the cosmic microwave background is an electromagnetic radiation that is a relic from an earlier stage in the development of the universe. This radiation is also known as "relic radiation." The Cosmic Microwave Background (CMB) is the weak radiation that permeates all of space.
One of the primary confirmations of the Big Bang is thought to be its discovery and thorough studies of its attributes. The cosmic background radiation was accidentally discovered in 1965, which shows that the early cosmos was dominated by a radiation field with extraordinarily high temperatures and pressure.
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Water is often called the “universal solvent” becuase many substances can be dissolved in water. What property of water allows it to be such a versatile solvent?
expansion upon freezing
polarity and cohesion
purity
high heat capacity
Answer:
polarity and cohesion
Explanation:
Please help me. no links i report you
Answer:
Option b
Explanation:
An unbalanced force moving everyone in Daniel and Maria's direction
There is a continuous variation in the shades of human skin. What type of inheritance does this illustrate?
multiple alleles
polygenic inheritance
sex linkage
codominance
incomplete dominance
Answer:
incomplete dominance
Explanation:
the answer is incomplete dominance
Which of the following characteristics of living things is very important for a population, but not necessarily for a single
organism?
a. Living things reproduce
b. Living things are made up of units called cells.
c. Living things maintain internal balance.
d. Living things respond to their environment.
Which is an example of adaptive social behavior?
A male deer tries mating with a female and is chased off by another male, but the original male finds another mate.
The grass that a rabbit usually eats is hard to find one season, but the rabbit finds another temporary food source.
Frogs and their young have coloration that enables them blend in to their environment so they can sneak up on prey.
Birds help take care of each other's young to increase their chances of survival, and the behavior is passed on to offspring.
Birds help take care of each other's young to increase their chances of survival, and the behavior is passed on to offspring.
What is an adaptive social behavior?Adaptive social behavior refers to actions or behaviors exhibited by individuals or groups that enhance their survival or reproductive success. In this case, the birds engage in cooperative parenting, where individuals assist in raising the offspring of others within their social group.
By providing care to the young of other birds, they increase the chances of those offspring surviving and passing on their genes. This behavior benefits the overall reproductive success of the group and is likely to be passed on to future generations, as it contributes to the survival and well-being of the species.
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***I WILL GIVE BRAINLIST*** What determines the order in which new nitrogen bases line up?
Answer:
Greenhouse Gases is the new nitrogen basesr
Explanation:
ihope it hepls
#carryonlearning
A Three-leaf clover is dominant (T) to four leaves (t). What is the probability of an offspring having 4 leaves when you cross a heterozygous clover with a four-leaf clover?
O 25%
O 50%
O 75%
O 0%
Answer:
%50
Explanation:
Heterozygous = 2 different alleles (Tt)
4 leaf clover = 2 recessive alleles (tt)
T is dominant over t, so with the combination of Tt three leaves are expressed, rather than four leaves
For a recessive trait (four leaves) to show 2 recessive alleles are needed
To find the percentage of the offspring to have four leaves a punnet square should be created
To find the percentage divide the number of four leaf offering with 4 and multiply by 100
2÷4×100=50
= 50%
Carbon is an element that is recycled on our planet. It is able to move through abiotic components of an ecosystem which system most accurately describes how the carbon cycle works
Answer:
I think it's either B or C
analyze the negative impacts of estracting land resources, Choose
one of the negative impacts and connect it to how it could negative
impact you in your everyday life,
Answer:
Soil degradation, water shortages, biodiversity loss and global warming.
Explanation:
The negative impacts of extracting land resources are soil degradation, water shortages, biodiversity loss and global warming etc. Global warming greatly influence our daily life because this Global warming changes the climatic condition of the region by increasing the temperature. Using extracted fossil fuels in vehicles releases a lot of carbondioxide gas that collects in the atmosphere and block the sunlight which increases the surrounding temperature. This increase in the surrounding temperature causes floods and greatly impact our life.
Which of these benefits the grassland by allowing light, warmth, moisture, and nutrients back into the soil?
ponds
fires
rainfall
trees
Explain why Calix's cells having more DNA than a normal cat meant point mutation was not the cause.
Mutation is the reason for the more DNA in Calix's cells.
Calix's cells having more DNA than a normal cat because of the mutation in the genes. There is no other way through which DNA in a gene increases. This increase in DNA from a normal condition leads to cancer and other disorders.
Mutation occurs in an organism when they are exposed to radiation which damaged the DNA of that organism so we can conclude that mutation is the reason for the more DNA in Calix's cells.
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Calix's cells having more DNA than a normal cat meant point mutation was not the cause but it happens due to chromosome number.
These Calix's cats are taken into consideration by all ladies  due to the fact they have got X chromosomes. As not anything extra than an ensuing or outcome, second in time genetic mutations, which appear to be preferred substitutions that affect the duration of the swapping or exchange meant of a nucleotide collection with simply any other nucleotides, ensue in an extra quantity of DNA for the duration of the Calix's cats.
What are cells in DNA?All residing matters have DNA inside their cells. In fact, almost every cell in a multicellular organism possesses the whole set of DNA required for that organism.
Thus the above reaction is appropriate.
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