As a result of global warming, what evolutionary changes could we infer might eventually be seen in polar bears?

Biology

1 answer:

mina [271]4 years ago

4 0

Answer:

Loose of body hair, reduction of body fat percentage and changes in life habits.

Explanation:

One of the most notorious changes would be the loss of body hair, due to the temperature increase. The amount of hair that polar bears now posses, helps them with keeping their body warm in very cold temperatures, as well as the body fat, which would also be reduced because of the excess of heat. Finally, their life habits could also change, as for example, part of the body fat helps them with hibernation, so these periods could be reduced or even lost.

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Chloe reads that given the correct conditions, cuttings from certain plants will form roots along the stem, enabling a new plant

Archy [21]

Answer:

The correct answer is - If you use the rooting hormone when cloning plants from cuttings, then it will be beneficial for the cuttings.

Explanation:

A hypothesis is a possible explanation or solution behind the particular natural world process or phenomenon. It is formed on the basis of the observation of the phenomenon or process, how it works or what characteristics it shows.

In this study, it is found that the root hormones promote the growth in the clonings from the cuttings of plants thus, the provided hypothesis is the correct hypothesis for the experiment given.

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What radiation is used in hospitals and how does it cause a problem for staff/workers?

UkoKoshka [18]

Radiation is used for X-rays, MRIS, any type of cancer killing.
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azamat

The major organ that you would find in the lymphatic system would be the spleen.

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3 years ago

What causes constellation to change positions during the night?

matrenka [14]

I am certain that it is due to the rotation of Earth. Note that earth rotates at almost a 1000mph.

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3 years ago

Two phenotypically normal parents have a child with CF. i. What are the genotypes of each parent? ii. What is the probability th

katen-ka-za [31]

To first dive into your question, here are some vocabulary terms that I will be using and will be helpful to you as well.

Homozygous dominant (BB): Is not affected by cystic fibrosis.
Homozygous recessive (bb): Is affected by cystic fibrosis.
Heterozygous (Bb): A carrier for cystic fibrosis.
Phenotype (Ex: Having cystic fibrosis): The appearance of an allele pair.
Genotype (Ex: bb): The genetic makeup of an allele pair.

We know that if both of the parents are phenotypically normal, there is no way that they can be homozygous recessive (bb), or have cystic fibrosis. We also know that since they have a child with this disease, they can't be homozygous dominant (BB) either. This means that both parents have to be carriers (Bb) in order for them to have a child with cystic fibrosis.

Below I have attached a Punnett square with both of the heterozygous parents.

Each child they have will have a 1/4 or 25% chance of having cystic fibrosis.

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3 years ago