What is directly responsible for matter moving and changing inside a bear's body?

Biology

1 answer:

Firdavs [7]3 years ago

4 0

Answer:

Explanation:

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b. In 1979, the estimated elephant population was 1.3 million and in 2007 it was 640,000. By approximately what percentage did t

saveliy_v [14]

Answer:

The initial amount, 1.3 million = 1,300,000 is the 100%.

now, 640,000 is a given percentage (lower than 100%) of that.

How we can find it?

suppose that 640,000 represents an x%.

Then we have that the quotient between the actual quantities and the percentages must be the same

(640,000/1,300,000) = x%/100%

x% = (640,000/1,300,000)*100% = 49.23%

Then the percentage declined is:

100% - 49.23% = 50.77%

The other question can not be answered with the given information.

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3 years ago

Why does water move along its concentration gradients?

Artemon [7]

There is an electrical gradient and there is a concentration gradient.

1.) Chemical gradient better known as concentration gradient is much more powerful and compelling than the electrical gradient.

2.) Water is a polar molecule, meaning one side it positively charged while the other is negatively charged. This polar charged molecule causes water to have a weaker electrical gradient, thus the water has to move on its concentration gradient.

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4 years ago

Professional gardeners often soak seeds in hydrogen peroxide before planting them. Why?

prisoha [69]

Answer:

Professional gardeners often soak seeds in hydrogen peroxide before planting them in order to increase the germination percentage or to reduce germination failure. When the seeds are soaked in hydrogen peroxide, the seed coat becomes soft and enzymes present in the seed becomes active. Due to soaking of seeds, the seed takes less time to germinate. So that's why gardeners uses this method.

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3 years ago

In a comparison of birds and mammals, the condition of having four limbs is.

Serga [27]

Answer:

In a comparison of birds and mammals, the condition of having four limbs is a shared ancestral character

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3 years ago

Which factor would cause two specialized tissues

nata0808 [166]

<span>(1) Specific sections of DNA molecules in the
chromosomes are activated.</span> This <span>contain identical chromosomes to function
differently.</span>

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3 years ago