Answer:
I think A
Changes in populations accumulate over time;
this is called evolution. The fossil record shows us that present day life forms evolved from earlier different life forms. It shows us that the first organisms on Earth were simple bacteria that dominated the Earth for several billion years.
Answer:
A: Biological Evolution
Explanation:
None of these terms actually exist. Evolution is simply called "evolution" and can be applied to multiple things. However, it would be A because organisms aren't geological, as that applies to the Earth itself, the environment isn't changing all at once with a certain organism either, and D honestly on it's own just doesn't make sense at all, so it would be A.
help me please i have 2 mins left (science)
Answer:
half of the moon's visible surface
<3
Answer:
A: Half of the moon's visible surface
What is the importance of neutral variation in evolution?
A trait that is neutral in one environment may be advantageous in another.
It is usually removed from the population by natural selection due to its deleterious phenotypes in the environment.
A trait that is neutral will most likely be removed from the gene pool.
It will cause for a population to risk decline and extinction.
Answer:
A trait that is neutral in one environment may be advantageous in another.
Explanation:
Neutral variation refers to the variation (either genetic or phenotypic variation) which is unaffected by natural selection. Neutral variation is known to increase genetic variation, which is a prerequisite to evolutionary change. An allele may be neutral in one environment and beneficial (or deleterious) in another. In consequence, neutral variation in one environment may increase the response to selection in different environmental conditions.
Cottontail rabbits closely resemble the fall and winter plants in which they hide
Answer:
In earlier generations, the rabbits that looked most like their surroundings survived and reproduced.
Explanation:
The cotton-tailed rabbits consist of 20 species that are found in America and have stubby tales with white under them. They're distributed over north, central, and southern America. They live in nests called forms, have an average life span of 2 years. Due to their camaflugeous nature, they change their coat color twice every year to protect themselves from predators.All stars
reflect light from the sun.
b. appear to wander off their star paths.
a.
c. produce their own light.
d. All of the above.
Answer:
option c. produce their own light.
Help me with this please
Answer:
C. Protective Barrier against infection and disease
Explanation:
The skin does not send chemical messages, nor electrical, and the skeletal and muscular system is what allows movement and structure, which leaves C as the answer because it is what protects outside diseases from getting into your blood or arteries
Hope this helps!
Abby has blue eyes like her father. Where is the trait found? A Genes in the chromosomes in a nucleus Home B Nuclei in a gene in a chromosome C Chromosomes in a gene in cytoplasm D Cytoplasm in a chromosome in a vacuole
Answer:A
Explanation:lol
which of the following is not considered a natural resource a.plastic b.gold c.titanium d.coal
Answer:
Gold
Explanation:
Deine kinetic energy and thermal energy. Describe what
happens to each as the temperature of a substances
increases
Answer:
Kinetic energy is the amount of energy a object has while it's in motion, and thermal energy is heat energy. In this case when the heat rises in substances for example a solid it will transform into a liquid causing the molecules to move faster which is a increase of kinetic energy. So the answer is "when the heat in substances increase the kinetic energy increases."
Hope this helps!
Explanation:
Why do you think analogous structures would cause Evolutionary biologists problems when trying to determine the relatedness of certain species?
Answer: Two analogous structures are similar in phenotype and developed to perform the same function, despite not being inherited from a common ancestor. As so unrelated species may look related due to having analogous structures.
Explanation:
Analogous structures evolved due to Convergent evolution. It means that structures are similar in functions but differ in morphology.
What do you mean by Species?A biological species is a group of organisms that can reproduce with one another in nature and produce fertile offspring.
Analogous structures are similar in structure that evolved independently in two living organisms to serve the same purpose. Due to their approx similarity sometimes evolutionary biologists face problems when trying to determine the genetic relatedness of certain species.
Therefore, Analogous structures evolved due to Convergent evolution. It means that structures are similar in functions but differ in morphology.
To learn more about Analogous organs, refer to the link:
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The villi and the root hair cell have many mitochondria. Explain why they this helps them to function properly.
Answer:
Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria , which release energy from glucose during respiration in order to provide the energy needed for active transport.
What does Sach see in the plant cells when he views them through the “new” microscope?
Answer:
Expla When he looked in the microscope, he saw solid structures, which we now consider chloroplasts,which are what produce the starch. ... They do this so that they can create the sugars that produce the starch in the plant.nation:
Some one please help
1. Cell
2. Blood
3. Cells
4. Epithelial
5. Tissues
6. Stomach
7. Organs
8. Digestive
9. Organism
10. Human
Answer:
1. cell
2. blood
3. cells
4. epithelial
5. tissues
6. stomach
7. organs
8. digestive
9. organism
10. human
Explanation: Hope this was helpful....
GIVING BRAINLIEST!!!
Which air temperatures usually result in snow and other forms of solid precipitation?
A) Freezing air temperatures
B) Cool air temperatures
C) Hot air temperatures
D) Warm air temperatures
Answer: B) Cool air temperatures
Explanation: Snow requires temperatures at the ground to be near or below freezing.
Plzz Help!! Thanks!!
The dew point is the point at which the
water vapor beings to fall out of the air?
True or
False
Answer:
The dew point is the temperature when water will start to condense out of the air. When air is saturated as much as possible with water vapor it is at the dew point. Air that is holding less vapor than it actually could is below the dew point
HELP due today in 5 min DONT G O O G L E USE or I’ll get an F
Answer: Waste managment and how safe the nuclear plants can be. They can really harm people and the enviorment depending on where it is.
Explanation:
is sleep deprivation inherited or spontaneous
Answer:
inherent
Explanation:
its most likely inherited
The ovaries are small organs that produce egg cells in females. Removal of
ovaries results in an inability to reproduce. In addition, if the ovaries are
removed before a girl reaches puberty, she matures into an adult but without
the secondary sex characteristics associated with females, including breast
and hip development. Which of the following physiological responses best
explains this observation?
Answer:
B
Explanation:
if you were a female and had this done to you, you would then understand.
Based on the information in the table, which animal belongs in the spot
labeled A on the branching diagram?
O A. Shark
O B. Tuna
C. Frog
D. Robin
SUBMIT
Answer: Shark is the answer
Answer:
Shark
Explanation:
Just did the test
difference between parallel venation and reticulate venation
this is where you can get
The difference between parallel venation and reticulate venation is in parallel venation, the vein of the leaf blade is in a parallel pattern, and in reticulate the vein of the leaf blade is a net or web-like structure.
What is venation?Venation is the pattern of veins present in the leaves. There are different patterns of veins present in the leaves, parallel venation, for example, banana leaf, and reticulate venation, for example, papaya leaf.
Thus, In contrast to reticulate venation, where the vein of the leaf blade is arranged in a net-like pattern, parallel venation has the vein of the leaf blade arranged in a parallel pattern.
Learn more about venation
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Yellow-eyed salamanders have been cited as an example of Batesian mimicry; their orange body color and yellow eyes mimic the coloration of the toxic California newt. Although the salamanders are palatable, their mimicry of a unpalatable species tends to prevent predators from attacking. In a follow-up study, Kuchta et al. observed the reaction of Western scrub jays (predators with toxic newt experience) when presented with both a yellow-eyed salamander and a closely related species after being presented with a toxic newt. What was significant about this study
Answer:
It was a follow-up controlled experiment that showed how a species can influence selection in another species.
Explanation:
A follow-up (cohort) study is a type of study followed over time in order to determine the development of a particular outcome. Moreover, a controlled experiment is one in which conditions are controlled by the researcher, and thereby it is easier to determine the incidence of the outcome. In the case above described, researchers performed a follow-up controlled experiment in which they measured how a species can influence selective processes undergone by other species.
The diagram below shows the structure of an animal cell.
s
Which number label represents the cell membrane?
0 1
O2
04
06
Answer:
The cell membrane is label 1.
Explanation:
The cell membrane is a biological membrane that separates the interior of all cells from the outside environment which protects the cell from its environment.
Give reasons why local efforts are required to conserve biodiversity
Answer:
Healthy ecosystems clean our water, purify our air, maintain our soil, regulate the climate, recycle nutrients and provide us with food. ... Biodiversity is the key indicator of the health of an ecosystem. A wide variety of species will cope better with threats than a limited number of them in large populations.
if one parent has two dominant alleles and another parent has two recessive alleles, the offspring will have____. (Hint: Draw a Punnett square for parents TT and tt.)
A. The recessive phenotype.
B. The dominant phenotype.
C. Two dominant alleles.
D. Two recessive alleles.
HELPPPP PLS ASAP
In sexual reproduction, a zygote is
A the product of fertilization of an egg by sperm
B the gamete responsible for the sex of the offspring
C.an egg that has not been successfully fertilized
D the final stage before the birth of an offspring
Answer:
A the product of fertilization of an egg by sperm
Answer: A
the product of fertilization of an egg by sperm.
Explanation:
Hope this helped
If the universe is expanding, why aren't the stars in the night sky fading away?
Answer:
This sounds poetic
If this is an actual question the stars are never ending so the more it expands the more it reveals more
I am found in plant cells. I am rigid, strong & stiff. I give support to the plant cell. I give the cell it's box shape
chlorophyll
mitochondria
cell membrane
cell wall
Answer:
cell wall
Explanation:
if it was a animal cell it would be a cell membrane
Oxygen _____.
breaks down food into energy
is found in healthy bones and teeth
is an organic element
is an important element in DNA
Answer:
first one
Explanation:
can you help me with my question Which of the themes of Hawthorne's "Dr. Heidegger's Experiment" is illustrated by this passage? Paragraph 36: The most singular effect of their gayety was an impulse to mock the infirmity and decrepitude of which they had so lately been the victims. A. Gayety produces an impulse to mock. B. It is a great release to look back on our problems happily C It is human nature to mock or make light of problems we have been delivered from I need to know as soon as possible
Can you please help?
Answer:
A
Explanation:
as water heats the particles move faster and expand the opposite for cold
Help ASAP!!!! 20 points.
Answer:
5= mRNA is “messenger” RNA. mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. This process requires nucleotide triphosphates as substrates and is catalyzed by the enzyme RNA polymerase II. The process of making mRNA from DNA is called transcription, and it occurs in the nucleus.