Answer: D
Explanation:
Which of these is an example of a biotic factor that could limit a community in an ecosystem?
A. A drought occurs for several months.
B. New predators move into the ecosystem.
C. A hurricane passes through an ecosystem.
D. Living space is lost due to human activities.
Answer:
B. New predators move into the ecosystem.
Explanation:
A, C, and D are all abiotic (nonliving) factors that could limit a community in an ecosystem.
help me because I mean you should cuz it's a nice thing to do
Answer:
the answer is C
Explanation:
Mutations are genetic changes in the DNA sequence of the genome in a particular organism. Mutations are caused by adding one or more extra nucleotides into the DNA (i.e. insertions), deleting nucleotides (i.e. deletions), or replacing nucleotides (i.e., substitutions). Due to the diverse nature of mutations, it is expected that they have different effects on the gene product (i.e., the resulting protein). For example, a deletion or an insertion, which are collectively are referred to as 'indels' mutations, may generate frameshift mutations that shift the way the DNA sequence is read. Moreover, if a nucleotide letter is written backward, it doesn't change the final product (i.e., the nucleotide sequence), which is represented in the example with the C option.
which is true regarding the process of meiosis I?
A) chromosome Number is reduced from diploid to haploid
B) sister chromatids in a cell undergoing are always identical
C) Most homologue pairs do not have any crossovers during prophase I
D) sister chromatids separate to opposite ends of the cell
Answer: The correct option is A (chromosome Number is reduced from diploid to haploid)
Explanation:
In sexual reproduction, offspring are produced by fusion of two different sex cells which usually come from two different parents. These sex cells are know as gametes.
Meiosis is a type of cell division that gives rise to gametes in which the chromosome number is halved. Thus, the gamete cell is said to contain a haploid number (n) of chromosomes.
A diploid cell has two sets of chromosomes: one from the male parent and the other from the female parent. When a diploid cell undergoes meiosis the following occurs:
--> the chromosomes replicate once and
--> the nucleus and cell duplicate ( divide equally) twice.
As a result, the diploid parent cell gives rise to four haploid gamete cells. Therefore the statement "chromosome Number is reduced from diploid to haploid ' is true concerning meiosis I.
Which layer of the rainforest usually receives the most direct sunlight?
the understory
A. the canopy layer
B. the forest floor
C. the emergent layer
D. the understory
Answer:
The emergent layer
Explanation:
This part of the forest has high tree tops
Answer:
The layer that get the most sunlight is the emergent layer.
Explanation:
the reason that is the awnser is the emergent layer is the highest part of the tree.
PLEASE HELP ASAP ILL GIVE BRAINIEST
Do you place an item in the autoclave before or after washing it?
Answer:
Wash it first to remove obvious soil or residue.
Then put it into the autoclave to sterilize it.
the human digestive system contains bacteria which aide in digestion for the human as well as vitamin production. the bacteria receive a home and food. this is an example of which type of symbiotic relationship?
Answer:
This is a mutualistic relationship.
CAN SOMEONE PLEASE HELP ME
Explain why it is often milder in areas such as coastal Maryland while areas such as Kansas or Iowa have more extremes in temperature? (Take into account the geographical location of Maryland and Kansas)
Which state does not have a National Park
Delaware
Rhode Island
North Dakota
All states have a National Park
Answer:
I think it's Delaware...
Explanation:
But it's not the only state without a national park.......
We live in the troposphere.
True or false
What is does the Law of Dominance state?
Carbon has an atomic number of 6. Based on this evidence, what can you claim about
carbon?
the number of protons in a carbon atom
the average atomic mass of a carbon atom
the group number of carbon
the period number of carbon
Do the same DNA sequences always lead to the same traits? Why or why not? I
what does a heterotroph mean?
Answer:
An animal that cannot make its own food.
Explanation:
A heterotroph is an animal or life source that cannot make its own food, so it depends on others things, such as plants or other animals. These types of listings can be as followed :
Carnivores
Herbivores
Omnivores
A. How do tropical rainforest ecosystems differ from other forest ecosystems?
They have less biodiversity and less light that reaches the forest floor than other forest ecosystems.
B. They receive more rainfall and have warmer average temperatures than other forest ecosystems.
C. They have warmer average summers and milder average winters than other forest ecosystems.
D. They have more limited areas along coastal areas than other forest ecosystems.
Answer:
C
Explanation:
Answer:
C
Explanation:
They have warmer average summers and milder average winters than other forest ecosystems.
Movement of the particles across the membrane stops when the concentration gradient no longer exists, the particles will continue to diffuse due to random motion
Answer:
Once the concentration gradient no longer exists, particles will continue to diffuse due to random motion.
Explanation:
When there is a permeable membrane between two solutions with different concentrations, the concentration gradient will go from the compartment with more particles to the one with fewer particles to valance the concentrations on both sides of the membrane. Once the concentrations are equal, particles will still randomly move from one side to the other, but the number of particles that move to one side is almost the same as the number of particles that move to the other, so there is still valance and the same concentration in both sides.
Why might forensic scientists want to
compare DNA from different sources?
Answer:
to crose check to make shure they have the right sample.
Explanation:
Explanations? we don't need Explanations where were going.
The "ribopart in the name deoxyribonucleic acid refers to the a. Rungs of the spiral ladder b. Bonds that hold two strands together C. Sugar component of DNA d. Type of helical arrangement
Which of the karyotypes shown is from a normal female?
A
B
C
D
Answer: c
Explanation:
Females have two X chromosomes and males have an x and a Y chromosome. The Y chromosome is significantly shorter because it doesn’t carry as many genes. C is the only option that has two X chromosomes
The karyotype of a normal female is in diagram c. The correct option is c.
What is a karyotype?A karyotype is an individual's complete set of chromosomes. The phrase might refer to an image created in a lab showing a person's chromosomes separated from each individual cell and organized in numerical order.
If a person has a mutation, the karyotype can tell whether they are a man or a mulcher. This is so because a person's chromosomes are represented by a karyotype.
A 23-pair karyotype, one of which is made up of sex chromosomes that are XY for males and XX for women, is required for a person to be considered to be mutation-free.
Males have an x and a Y chromosome, while females have two X chromosomes. The Y chromosome is considerably smaller because it contains fewer genes. The only choice with two X chromosomes is C.
Therefore, the correct option is C.
To learn more about karyotype, refer to the link:
https://brainly.com/question/21086814
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Which of the following statement is true?
A. Energy can be created, but not destroyed.
B. Some machines are 100% efficient.
C. Atomic energy can't be converted into electricity.
D. When work is done, some energy is always "lost" as heat.
PLEASE ANSWER!! PICK U AS BRAINLIEST!!!
Answer:
your answer is D when work is done, some energy is always lost as heat
Explanation:
Can energy be lost as heat?
In practice, whenever work is done to move energy from one form to another, there is always some loss to other forms of energy such as heat and sound.your answer is D when work is done, some energy is always lost as heat
resequence the following from largest to smallest
bases
chromosomes
nucleus
genes
Answer:
IM SMART BECAUSE I'M A TEACHER
Explanation:
SO THE ANSWER IS NUCLEUS GENES CHROMOSOMES BASES
NEED IT ASAP ! ! ! What type of deposition would create sand dunes? Earth/Environmental Science
Answer:
Earth deposition, wind would blow the sand and have it pile up
Explanation:
Answer and i will give brainly
HELP ME PLEASE I WILL GIVE BRAINLIEST IF CORRECT AND EXTRA POINTS I CANNOT FAIL THIS SCIENCE TEST.
Which statement describes the amount of energy passed to the hawk in the energy pyramid above
A. The hawk has 50 percent of the energy available to it.
B. The hawk has the least amount of energy available to it.
C. The hawk has the most amount of energy available to it.
D. The hawk has no energy available to it.
I took this before the answer is B
Answer:
the answer is B
Explanation:
this is sooooooooooo easy
Which of the following is NOT evidence to support evolution?
A.Fossils
B.DNA and protein similarities
C.Embryo similarities
D.Mutations
Magnetic storms are the result of which of the following?
A) a solar prominence
B) an increased number of solar wind particles
C) constant solar wind
D) 10-to 11-year cycling of sunspots
Answer:
Answer: The answer is B, an increased number of solar wind particles. and I don't care if I get brainiest
How does camouflage help an organism survive?
Answer:
they camouflage into environment to blend in and to look the same as whatever they are on or in this stops them from being recognized
Answer:
Organisms use camouflage to mask their location identity and movement. This allows prey to avoid predators, and for predators to sneak up on prey
Explanation:
What is a benefit of using coal for energy ?
- it is plentiful in the us
- it can be mined without damaging the land
- it can be shipped in a liquid form
- it is nonpollution
Answer:
it is nonpollution.....
According to this diagram, which way would the molecules need to move in order for the figure above to represent active transport?
molecules inside and outside a cell, with more molecules outside of the cell than in
Molecules inside the cell move outside the cell.
Molecules outside the cell move inside the cell.
The molecules will not move.
Molecules will move into and out of the cell at the same time.
Answer:
Molecules inside the cell move outside the cell.
Explanation:
Explain how you get energy indirectly from the sun.
Name the hormone released when the blood glucose concentration is too low
Explanation:
Glucagon
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Answer:
Glucagon is released to stop blood sugar levels dropping too low (hypoglycaemia), while insulin is released to stop blood sugar levels rising too high (hyperglycaemia). The release of glucagon is stimulated by low blood glucose, protein-rich meals and adrenaline (another important hormone for combating low glucose).
Explanation:
hope this help
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