Answer:
Calcite is created by B: Calcium, Carbon, and Oxygen
What are the biggest challenges to organisms in the tundra biome?
migrating to warm areas and finding food
surviving cold temperatures and finding trees to live in
surviving the cold temperatures and obtaining and keeping enough water
finding enough food and obtaining and keeping enough water
Answer:
Surviving cold temperatures and finding trees to live in
Explanation:
The major problems of tundra biome are oil, gas, mining industries
Answer:
surviving the cold temperatures and obtaining and keeping enough water
Explanation:
A scientist makes the argument that she has found DNA evidence that shows that evolution does not exist. What
would her evidence have to show for her to be correct?
Strong genetic similarities in closely related organisms and weak genetic similarities in distantly related
organisms
Weak genetic similarities in closely related organisms and strong genetic similarities in distantly related
organisms.
Strong physical similarities among closely related organisms and also among distantly related organisms.
o Weak physical similarities among closely related organisms and also among distantly related organisms.
An evidence that shows that evolution does not exist is: Weak genetic similarities in closely related organisms and strong genetic similarities in distantly related.
WHAT IS EVOLUTION:Evolution is process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth. This means that organisms that evolve from the same lineage are expected to have similar genetic similarities.Therefore, an evidence that shows that evolution does not exist is: Weak genetic similarities in closely related organisms and strong genetic similarities in distantly related.
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Answer:Its B
Explanation:
Of the following, which component of life is the largest?
O Molecule
O Organelle
O Atom
O Cell
out of those options, the cell is the largest.
thrips are insects that feed on rose
Answer:
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In nature why do sediments settle from water? The water must blank or blank
Answer:
These benefits occur due to sediment deposition – when suspended particles settle down to the bottom of a body of water. This settling often occurs when water flow slows down or stops, and heavy particles can no longer be supported by the bed turbulence.
Answer:
because they are soft
Explanation:
and that why they swim
Evaluate the following statement:
The Lock-and-Key Model is analogous to two puzzle pieces fitting together. The
Induced-Fit Model is analogous to a hand slipping into a glove.
a. True
b. False
Answer:
true I know the answer because my teacher told me
Explain how a reduction in phytoplankton can lead to a reduction in fish populations in the Indian Ocean.
Answer:
This will result in a further decline of the phytoplankton in the Indian Ocean, exaggerating the stress on the marine ecosystem
Explanation:
sorry if im wrong
Double stranded RNA is cleaved by
Answer:
Dicer
RNA-dependent RNA polymerase amplifies siRNAs by binding to them and making more dsRNA, which is recognized and cleaved by Dicer into secondary siRNAs. The result is the silencing of genes by amplifying the RNAi effect. In certain cases RNAi also silences genes by the formation of heterochromatin.
What percent of global freshwater is estimated to be used for crop irrigation?
90%
2.5%
60%
30%
Answer:
2.5%
Explanation:
because the global freshwater is estimated and observe percentage of water to used for crop irrigation and they compelled that 2.5% is exactly to used.
Why does a plant cell have a fixed shape and an animal cell does not?
The cell membrane of a plant cell is surrounded by a cell wall.
O Plant cells have larger vacuoles than animal cells.
O The process of photosynthesis causes plant cells to have a rigid shape.
Answer:
it is because a plant cell is surrounded by a cell wall
In which of these does a chemical change take place?
mixture
compound
solution
none of the above
I’m sick of my parents I want a sister
Because the marshmallow burned for a short time in the marshmallow vs cheeto lab, it is safe to say
that the marshmallow acted like a...
o
A. carbohydrate
B. lipid
6. Why do you think satellites are placed in the thermosphere?
Answer:
It is called the thermosphere because temperatures can reach up to 1,500 degrees Celsius (2,732 degrees Fahrenheit). However, despite the high temperatures, the pressure is very low, so satellites don't suffer heat damage.
Explanation:
I hope it's help :)
What structures are found in all cells? select two options
Which of the following is NOT considered a form of precipitation? *
Rain
Snow
Lightning
Hail
All of the above are considered precipitation
Answer:
Lightning is not considered a form of precipitation but rather a discharge of electricity.
write any two adaptational characteristics of the plants found in mountain region
Answer:
Branches are sloping.
Trees have a cone shape.
The leaves have a needle shape.
The accumulation of snow is prevented by special structures.
Thick bark on trees.Explanation:
Why is the metric system more scientific than the English system?
A. The English system is older than the metric system, and so it is less relevant.
B. The English system is only used in English-speaking countries.
C. The English system was based on human traits, while the metric system was founded on physical constants.
D. The English system must be converted to the metric system using conversion factors.
Answer:
Unlike the British Imperial System, the metric system, or SI (from the French Système International), is based on a natural constant.
Explanation:
The metric system is more scientific than the English system because the English system was based on human traits, while the metric system was founded on physical constants.
What do you mean by the Metric system?The metric system may be defined as the scientific way of measuring weights, and distance in kilograms and meters respectively with the help of a decimal system.
The metric system may also be known as the SI system. SI system is not based on the human traits rather then it depends on the natural constant. It is more precise, standard, and easy to understand.
Therefore, the correct option for this question is C.
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need help with the top question :p
How would an error during mitosis cause a different effect on the body than an
error during meiosis
A mistake in the process of mitosis leads to the development of the daughter cells having chromosomes without segregation.
What is mitosis?A cell undergoes cell division by replicating its chromosomes, segregating chromosomes, and creating two identical nuclei during the mitotic phase. The cell organelles are divided equally between two daughter cells with the same set of genomes after mitosis.
Prophase, prometaphase, metaphase, anaphase, and telophase are the main four stages. Meiosis creates cells that are genetically distinct from the parent and have half as much DNA as mitosis, which divides a single "parent" cell into two genetically identical cells.
Therefore, mitosis is a process used in the somatic cells whereas miosis is in fertilization.
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Plzzzz help Creating models to examine concepts is important in science. Some of these are experiments
and only one is a model. Which one is a model?
a
O A heated soda can is cooled rapidly to see what will happen to air pressure.
O An apple is sectioned into quarters to represent the ratio of water to land on Earth.
O Ice cubes are left to melt on different surfaces to find out how materials conduct heat.
O Students conduct a color blindness test with their family members.
Knowing that a model is considered a representation of something, the correct option is option B, in which the apple represents the Earth. An apple is sectioned into quarters to represent the ratio of water to land on Earth.
--------------------------------
To answer this question, you can think about a model as a representation of something.
A scientific model can represent an object, a system, a process, a phenomenon, etcetera.
Models are used to explain, predict, or describe natural events. They constitute a significant tool in modern science and are essential to scientific practice.
Knowing this, among the provided options, the one that is a model is option B.
The apple is representing the ratio of water to land on Earth. It is a representation of the earth.
All the other options are experiments performed to see what is going to be the result.
---------------------------------
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Sonar is an echo-sounding device, which makes a profile of the sea bottom.
Question 1 options:
True
False
Answer:
false.
so·nar
/ˈsōˌnär/
Learn to pronounce
noun
a system for the detection of objects under water and for measuring the water's depth by emitting sound pulses and detecting or measuring their return after being reflected.
"a weak sonar signal"
Answer:
0.3106 seconds
Explanation:
Frequency= 20,000-Hz
The speed of echoes sounds can be calculated using the expression below;
Y= ( 2x/t) ...........................eqn(1)
t= overall time taken
x = maximum depth = 230m
Y= speed of echoes sounds
Speed of sound in water= 1,481 m/s which is a constant with little variation.
If we substitute the given values into eqn(1) we have
1481 = (2× 230)/ t
1481 × t= 460
t=460/1481
t=0.3106 seconds
Hence, the minimum time between pulses (in fresh water) is 0.3106 seconds
In dogs, one pair of alleles determines coat color (dark and albino). Another pair of alleles determines hair length (short and long). Thus, each gamete will contain one of the coat-color alleles, C or c and one of the hair-length alleles, B or b. In repeated crosses of a specific dark, short-haired dog with an albino, long-haired dog, all the offspring were dark with short hair, as shown in cross I. However, in subsequent crosses of another dark, short-haired dog with a dark, long-haired dog, the ratios shown in cross II below were obtained. In cross II, the genotype of the dark, short-haired parent is which option choice.
Answer A: CcBb
Answer B: ccbb
Answer C: CCBB
Answer D: CCbb
Answer E: ccBB
Answer:
the answer is b
Explanation:
In cross II, the genotype of the dark, short-haired parent is which option choice. Answer A: CcBb
Genetic crossesIn genetic crosses, the allelic combinations that translate the phenotypes are called genotypes, and thus, the designations aa, Aa and AA represent the genotypes. In crosses of single-gene inheritance, in which there are dominance relationships, two different genotypes (Aa and AA) reproduce the same phenotypes. And when a cross occurs, both phenotypic and genotypic proportions can be observed.
With this information, we can conclude that the genotype in the second cross was heterogametic.
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most nectar in flowers is contained in the middle of the blossom at the base of the patels. why you think the location of the nectar in important for the plants reproduction
The triplet code of bases for RNA may be represented by all of the following except -
F CGT
G CGA
H CGG
O CGU
In Culinary class, Jennifer roads a recipe that noods wited spinach and decides to use salt to propare the leaves. She places the spinach in a solution of 8% salt, which causes the plant cols to shrink
since they normally have an internal salt concentration of 0.9% salt. Which statement best explains why the cells shrink?
Sall causes the cell membrane to swet and absorb water trom the cytoplam
Sat moves from the 8 sal solution into the cell and chemically bind with water
Water moestrom the cell through the cell membrane to an area of lower water concentration
O Water moves from a lower concentration of water in colis cytoplasm into the nucles and colorganelles
The cell shrinks because of the movement of water away from the cell into the more concentrated salt solution.
Osmosis is the movement of water from one region to another through a semi - permeable membrane. A hypertonic solution contains more solute than the cell.
In this case, the external salt solution is hypertonic because it contains a 8% salt concentration whereas the cell contains only a 0.9% salt concentration. As such, water moves out of the cell into the solution.
The cell shrinks because of the movement of water away from the cell into the more concentrated salt solution.
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Steroids are a type of what?
lipids
carbs
sugar
hormone
Answer:
lipids
Explanation:
scientific question about a monkey
What is something you can never seem to finish?
Answer:
This!! HAHAHA!
Explanation:
explain how lynn margulis hypothesis changed scientific ideas about cell development
Answer:
Margulis theorized that eukaryotic cells (cells with nuclei) evolved from a symbiosis of bacteria without nuclei that had previously lived independently. ... This serial endosymbiotic theory, or SET, gave a new view of evolution and helped explain the origin of cells with nuclei.21-Oct-2008
Works written: Origin of Eukaryotic Cells, Symbiosis in Cell Evolution, Microcosmos ...
Professions: biologist, scientists
Spouse: Carl Sagan
Explanation:
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