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2 years ago

Summarize variations in climate among three major zones as you travel south from the equator toward the South Pole?

1 answer:

7 0

Equator area: closest to the sun and hot and humid due to the mass evaporation from the excess heat.

Mid equator/south pole: somewhat mild, colder, probably mid-humid, depending on which end of the midsection you're going for

South Pole: cold and dry. Cold because it's naturally far away from the sun (like the north pole) and dry because there isn't significant water evaporation here and any that may form crystallizes into snow and ice.

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When a plant is placed in pure distilled water, its cells will __________.'

kotegsom [21]

Answer:

If a plant cell is placed in distilled water, water will enter the cell and the cell contents will expand. However, the elastic cell wall exerts a back pressure, which will limit the net gain of water.

Explanation:

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2 years ago

Imagine that a doctor is culturing two types of cells: one from a malignant melanoma and one from a normal skin sample. How woul

Lynna [10]

Answer:

Malignant melanoma cells would have active telomerases that constantly replenish and lengthen telomeres.

Explanation:

Telomerase can be described as enzymes which add the repetitive sequences called telomeres at the end of a chromosome. Telomeres can be described as repetitive sequences at the end of the chromosome which are involved in protecting the chromosome from any damage.

In a normal skin cell, the telomeres will shorten with time. But in a malignant skin cell, the telomerase will add the repetitive sequence again and again. The telomers will not be able to shorten.

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2 years ago

A population of birds lives on a small island. Another population of the same species lives on the mainland. The distance betwee

Anna007 [38]

Answer:

Explanation:

Based on this information it can be said that this formation between the islands and the mainlands will most likely cause an increase in gene flow between the bird populations. Since the islands and the mainland are now connected birds from both these two different habitats will begin mating and producing progeny, thus causing gene flow to increase between these species.

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2 years ago

In pea plants, the allele for tall stalks (T) is dominant over the allele for short stalks (t). Suppose a cross between a tall p

vazorg [7]

Answer:

Tt - 1/2

tt - 1/2

Explanation:

<em>A cross between a tall pea plant and a short pea plant that produces 43 tall and 47 short offpsring (almost 1:1) is most likely a cross involving a heterozygous tall individual and a homozygous short individual.</em>

Tt x tt

Offspring = Tt Tt tt tt (50% tall and 50% short)

If one of the tall offspring (Tt) is crossed with one of the short offspring (tt):

Tt x tt

Offspring = Tt Tt tt tt

Genotype ratio = 2Tt:2tt

Hence,

Tt = 1/2

tt = 1/2

6 0

2 years ago

Read 2 more answers

Select the correct answer from each drop-down menu. How did Burmese pythons become an invasive species? Species used for ornamen

stepladder [879]

Answer:

be placed in another area that is not native, so it is introduce in a food web that is not it native food web.

Explanation:

In Florida, USA, there were a problem when some citizens decide to adopt and grow some pythons as an exotic pet. When they grow a lot, the owners release them in a National Park or they escape from their houses, until they reach the aquatic ecosystem, so raccoons and opossums that feed near the water edge, they become preys of the phytons. As a result the natural food web of the ecosystem, move, giving as a result lost of another specie native of the area.

Hope this info is useful.

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2 years ago

Read 2 more answers