it is impossible for humans to be at the bottom of the food chain

Answer:

where is the link I didn't see in comments

Answer:

Melanocytes

Explanation:

Melanocytes produce the protective skin-darkening pigment melanin. Melanocyte, specialized skin cell that produces the protective skin-darkening pigment melanin. Birds and mammals possess these pigment cells, which are found mainly in the epidermis, though they occur elsewhere like in the matrix of the hair.

Melanin is a that is produced in organelles called in specialized cells called

Melanin is a dark pigment that is found in the skin of a human. This factor affects the color of the eyes, hair, etc in people as the more melanin available in the body, the darker these parts of the body are.

A specialized cell is responsible for the production of melanin called melanosomes and this is in varying quantities in different people.

Melanosomes are those cell nucleus that are responsible for the production, storage and transfer of melanin to the parts of the body.

Therefore, the correct answer is melanosomes

Read more here:

https://brainly.com/question/13516231

Answer:protection from other predators.

Explanation: the quills will stick into a predator that attack the porcupine Note: it does NOT shoot its quills

Answer: protection from other predators.

Answer:

confirm the results if you're using edge

Explanation:

Answer:

B. confirm the results

Explanation:

i just took it

Answer:

It is typhoid. typhoid is not a viral disease

Answer:

Typhoid is not a viral disease.

Explanation:

Viral diseases are spread through virus particles, while typhoid is spread from typhi bacteria.

Answer:

Cells regulate their division by communicating with each other using chemical signals from special proteins called cyclins. These signals act like switches to tell cells when to start dividing and later when to stop dividing.

A healthy cell decides when to divide by sensing and receiving signals from its surrounding environment.

In conclusion, a healthy cell decides when to divide by sensing and receiving signals from its surrounding environment.

Learn more in:

https://brainly.com/question/1305994

Answer:

Asexual

Explanation:

I think Asexual reproduction is better because you only need one reproduction Creature. For example plants, they are asexual so they do not need to worry about mating. Instead they can just create more plants by doing nothing. This helps us because we get more plants in a shorter amount of time. another example of Asexual reproduction is cross-pollination which is also an amazing way of creating more plants in a shorter time.

Answer:Consequently, the temperature will fall. Rainfall and snow are results of water cycle and can lead to severe weather conditions. Excessive rainfall due to water cycle can cause floods. Extremely low rainfall, lack of adequate water sources can lead to draught in a given region.

Explanation:

Answer:

Possession of root, leaves and vascular/conducting tissues

Explanation:

Ferns and bryophytes are regarded as lower plants in botanical studies. Bryophytes have been in existence prior to the appearance of ferns. BRYOPHYTES are a group of non-vascular plants i.e. lack conducting tissues such as xylem, phloem etc. They include misses, liverworts and hornworts. Ferns, on the other hand, belong to a group of vascular plant species called PTERIDOPHYTES.

However, in terms of population and domination of the Earth, ferns are believed to be more successful than their counterparts (bryophytes). This is primarily because of the possession of true roots and vascular tissues like xylem (for conducting water), phloem (for conducting sugars) by FERNS making it easily adapted to life on land.

Answer:

tentacles

Explanation:

hope this helps :]

Answer:

octopus have chemoreceptors in the epidermis  

Explanation:

hope this helps a little

Answer:

This concept is known as diffusion.  Diffusion is a passive process, as it requires no energy for it to occur.  In a cell, it is used as a method of passive transport since it requires no energy.

Explanation:

A P E X

Answer:

Parasitism

Explanation:

A flea and a dog go with this example because a flea irritates the dogs skin and feeds on its blood. (Just like how some sea animals carry bacterial diseases. Like Shrimp or something)

Hope this helped xoxo! :)

Answer:

a. 5' CGA 3

Explanation:

The wobble type of base pairing also comprises the base pairs formed by inosine (I) also called hypoxanthine with Cytosine(C), Thyamine(T), or Adenine (A),

Where purine base pairs A to G(or I), A to A, and G to C.

Where

5' GCU 3' pairs with

5' CGA 3

Therefore G pairs to C, C pairs to G, U pairs with A.

Answer:

Two modes of chromatography that could be used over and over, based on characteristics of histones throughout the issue, are:

Explanation:

A stationary step, consisting of such a polymeric material with numerous pores of various sizes. The larger proteins would travel further as the solvent system comprising the analytes flows through the paper chromatography and therefore will be separated first. That was because their greater size does not in itself allow the pores found in the polymer to get trapped. Tiny proteins such as histones, and on the other hand, can pass slowly across the process to have been eluted later.

As even the histone properties at biological pH are strongly positively charged, through the use of highly reactive particles as when the stationary step will allow histones to connect to themselves and now all the proteins, as well as favorable proteins that are poorly absorbed, would be eluted. Many positively charged molecules, that aren't as highly charged at around the same pH as histones, will stay throughout the stationary step, however, based on whose net charge, should flow independently of histones.

The two classes of chromatography techniques include size-exclusion and ion exchange chromatography.

Chromatography is a technique used in molecular biology laboratories to separate biomolecules.

In conclusion, the two classes of chromatography techniques include size-exclusion and ion exchange chromatography.

Learn more in:

https://brainly.com/question/26491567

Answer:

Sunlight shines only three months out of the year.

Explanation:

I think this is right

Because abundance means a large amount so there would be no competition there.

If organisms share a place to sleep then that means no competition

If a living thing is consuming berries on a tree then the living thing is just eating

But if the sunlight only shines three months out of the year then that can cause a shortage of food in the environment causing for the living creatures in the environment to compete for the food that is left since there won't be enough to supply for and abundance of living things.

The statement that describes competition in an environment is option B a living thing consumes berries on a tree. Thus, consuming berries on a tree is reducing the availability of the food for other livings depends on the berries.

In the nature, the concept that survival of the fittest domintates. The organisms which are fit physically and are smart to gather food will survive in the nature otherwise they will extincts.

An ecological community is a collection of populations of at least two distinct species that interact both directly and indirectly in a specific geographic area. Within this community, diffrent organisms can be found .

Numerous ecological characteristics and functions, including nutrient cycling and food webs, are based on interactions between species. Depending on the evolutionary context and environmental factors that they take place in, these interactions can have a variety of different natures.

Because of this, ecological interactions between particular individuals and entire species are frequently difficult to identify and quantify and depend on their scale and context they face extinction. Hence, option B is correct.

To find more on environmental competition, refer here:

https://brainly.com/question/15852084

#SPJ5

Answer:

nucleus  mitochondria ,

, lysosome i think

Explanation:

Answer:

A) nucleus

B) mitochondria

D) lysosomes

Explanation:

you can look at a diagram and find the differences

Answer:

Explanation:

Answer:

I believe the answer is a missense mutation.

Explanation:

As it is a point mutation, a single nucleotide will provide a codon for a different chain of amino acids from that point on. This is a type of non-synonymous substitution.

Answer:

Positive

Explanation:

Because there is no negative numbers in your equation and a positive times a positive equals a positive.

Answer:

120N

Explanation:

F=ma

120N=6kg(20m/s^2)

Answer:

The amount of chemical energy starts to decrease.

Explanation:

Hope this helped

Answer:

four codon in mRNA sequence code for serine aminoacid.

Explanation:

UCA

UCG

UCC

UCU

these four codons code for aminoacid serine.

Answer:

The correct answer is: 600,000 years

Explanation:

Half-life is the time which is essential or required to decrease a specific substance to half of its initial amount of the substance. So, if a substance has a half-life of 200,000 years then it means it takes 200,000 years to decrease or change into a new substance and remain half of its initial quantity.

half-life              amount

     0                  20000

     1                    10000          

     2                    5000

     3                     2500

total half-life = 3 to 2500 atoms of A

so, the time will be = 3 * 200,000 years

 = 6000000

both species had growth in number within the same time period

Answer: I thinks it’s true.

Explanation:

Answer:

True.

Explanation:

Answer:The answer is Germination

Explanation: I took the test