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Ymorist [56]
3 years ago
7

(a) Describe the importance of phenotypic variation in louse body color among individuals in a population of lice.

Biology
1 answer:
stepan [7]3 years ago
8 0

Answer:

In parasitic insects such as lice, the melanism is an evolutionary strategy of adaptive significance  

Explanation:

In lice, different body colors represent an adaptive advantage because this feature should enable them to host on different hair colors and be undetected by the host. Therefore, different colors confer to this species the capacity to survive in different types of environments (i.e., hair colors)

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When scientists discuss the Sixth Extinction, they are referring to which pattern in the rate of extinction?
Travka [436]

Explanation:

The Holocene extinction, otherwise referred to as the sixth mass extinction or Anthropocene extinction, is an ongoing extinction event of species during the present Holocene epoch (with the more recent time sometimes called Anthropocene) as a result of human activity.[3][4][5] The included extinctions span numerous families of plants[6] and animals, including mammals, birds, reptiles, amphibians, fishes and invertebrates. With widespread degradation of highly biodiverse habitats such as coral reefs and rainforests, as well as other areas, the vast majority of these extinctions are thought to be undocumented, as the species are undiscovered at the time of their extinction, or no one has yet discovered their extinction. The current rate of extinction of species is estimated at 100 to 1,000 times higher than natural background extinction rates.

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please. follow. me

8 0
3 years ago
Photosynthesis requires a supply of CO2 as well as H2 O and sunlight. How do plants obtain these resources? (Hint: refer to plan
Triss [41]

Answer:

CO2 is supplied by mammals and other living animals exhaling, producing CO2 this is absorbed through their leaves, and stems

H2O is supplied by the water cycle, nearby rivers, oceans, creeks etc. This is soaked up through their roots. Excess sugars are also stored in the roots as food.

Sunlight is provided in the atmosphere and the chlorophyll absorbs this.

Explanation:

3 0
3 years ago
14. Within a single use of the scientific method, which of the following steps can only be performed after data is collected? A.
nydimaria [60]
The answer is D. <span>Conclusions are drawn. 
This is the only choice that can be done after data gathering, formulation, and analysis.


Other choices are in correct

</span><span>A. Controls and variables are chosen.  (Identified before an experiment)
B. The initial experiment is designed. (Has been planned before an experiment is done.)
C. The initial hypothesis is formed. (Before the experiment a hypothesis is already drawn.</span>
8 0
3 years ago
What is the function of the structure labeled Y?
Rashid [163]

Hey there!

I'm assuming it's pointing to the wall in between the two sections of the heart.

We can go over the function of the blue section and red section of the heart. Though I must admit I am not well versed with hearts of birds, I will assume this is similar to a human one. The blue section <u>receives blood from the body which doesn't have any oxygen left in it,</u> and the red section <u>receives blood from the lungs, newly oxygenated.</u> This sector in between separates these two sections, and separates oxygen-poor blood and oxygen-rich blood.

Thus, your answer is option D.

Hope this helps, feel free to let me know if you have any additional questions about this specific problem!

3 0
3 years ago
Read 2 more answers
What happens to glucose inside a cell during cellular respiration?
alexdok [17]
I think the answer is c.
7 0
3 years ago
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