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Sophie [7]
3 years ago
6

Which of the following does natural selection act directly upon? Alleles, genes, individual organisms, or mutations?

Biology
1 answer:
Inga [223]3 years ago
6 0

Natural selection act directly upon <u>Alleles</u>

Explanation:

Genes, such as that of fur color, have many variants called alleles. Natural selection act on the alleles and chooses the best fit for an environment and eliminates the disadvantageous ones from the population over generations. Mutations are a rare occurrence that increases the number of allelic variants of a genes on which natural selection can act upon.

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Which is an example of how the peripherial nervous system helps the body maintain hemostasis? A muscles
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Muscles contract rapidly to produce heat on a cold day.

Explanation:

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The water at the top of the water fall has ___ energy a. Potential b.kinetic c.heat d. Metabolic
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How will scientists know if a patient is cured from HIV
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There body will be able to fight off sickness and cancers again. The immune system will slowly start to rebuild and become strong again.

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Explain the distribution of the humid subtropical hot-summer and mediterranean dry summer climates in north america, and the dif
sergeinik [125]

In general, the warm to hot summers and relatively mild winters of the Mediterranean and humid subtropical climates are similar. More people live in humid subtropical regions, which are occasionally invaded by chilly air in the winter.

Overall, this region's winter temperatures are typically 10 to 20 degrees Fahrenheit cooler than those in Mediterranean regions.

Whether or whether the summers are hot or warm in a region with a Mediterranean climate determines the subcategory. In comparison to the dry summer heat of the Mediterranean climate zones, the summers in the humid subtropical zone are equally warm or hot, but they typically have significantly more humidity, resulting in sultry weather that generally feels more uncomfortable.

What is humidity?

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7 0
2 years ago
(a) (1) State similar characteristics between the sea teak leaf and the weeping willow leaf
m_a_m_a [10]

1. Answer:

Both these leaves are quite similar because of their physical appearance. <em>The sea teak leaf and weeping willow leaf are narrow and elongated. However, a weeping willow leaf has tapered edges. </em>

The scientific names of sea teak and weeping willow plants are Podocarpus polystachyus and Salix babylonica.

  • The leaves of both these plants are simple regardless of their receptive compound appearance. This is due to the presence of complex vein structure on the leaf.

2. Answer:

<u>There many differences between sea teak leaf and weeping willow leaf.</u>

Sea teak leaf is 3-10 cm long while weeping willow leaf is only 6 cm long.  

Sea teak leaves are bright green and shiny while weeping willow leaves are green at top and white at the bottom.

<em>The bark of weeping willow can be used to obtain various medicines. Meanwhile, the leaves of sea teak plants are chewed to ease pain of joints. </em>

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<u>Sea Teak trees are found in Indonesia, Malaysia etc.</u>

4 0
3 years ago
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