Answer:
Troposphere.
Explanation:
Humans live most of their lives in the troposphere atmosphere.
Answer:
D, form rings and chaines i think
Explanation:
This allows the Carbon to form long chians with elements such as hydrogen and phosphorus, etc, used some info from this site
https://courses.lumenlearning.com/wm-nmbiology1/chapter/carbon-and-carbon-bonding/
if my answer helps please mark as brainliest.
I n the F1 generation, there will be no recessive offspring but in the F2 generation there is a 25% of offspring being recessive.
You can find more info about percentages by observing images. called Punnett Squares.
Hope it helped,
BioTeacher101
A mutation is one form of genetic variation.
Answer:There are 11 nonessential amino acids.
Explanation:amino acids are monomers of proteins.proteins are made up of carbon,hydrogen, oxygen and nitrogen.there are 20 amino acids found in proteins.
Plants cam produce all the amino acids they need but animals cannot.
Essential amino acids are those that animals cannot produce by themselves and so need to obtain from their diet.there are 9 in numbers.
Non-essential amino acids are produced by the animals.they are not necessarily non-essential as the name indicates.they are 11 in numbers.
