The correct answer is - A. Death rate.
We get the fertility rate from the birth rate and the death rate. More specifically, from the number of the children that are born in a given time frame (usually a year) we minus the number of the people that have died in the same time frame, so the difference between them gives us the fertility rate.
The fertility rate can be positive (in the difference is a positive number) and negative (if the difference is negative number).
Answer:
50%
Explanation:
Hello!
We can observe that:
R red eyes
r white eyes
The possible gametes for the female are XR and Xr.
The possible gametes for the male are Xr and Y
Xr Y
XR XRXr XRY
Xr XrXr XrY
The expected offspring is:
a red-eyed female (XRXr)
a red-eyed male (XRY)
A female with white eyes (XrXr)
A white-eyed male (XrY)
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D. fingernails
Skin, hair, and vertebrae are all the outer layer of the body and protect the body. The fingernails aren't part of that.
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