Because the blood goes to all parts of the body, and if waste gets into it it can do a lot of damage or even become life threatening
Answer:
33%.
Explanation:
The 4% population is red-hair due to the recessive mutation in melanocortin 1 receptor (MC1R).
Since, the population is in Hardy-Weinberg equillibrium- laet the frequency of recessive allele with red - hair is 'q' and the frequency of dominant allele in the population is 'p'.
q=0.2
According to hardy-weinberg equillibrium
(p+q)=1
p=1-q
p=1-0.2
p=0.8.
The total population with non red hair is calculated by
=
= 0.64 + 0.32
= 0.96
The percentage of the population with non red headed carrier for MC1Rr is calculated by:
=0.32/0.96*100
=33%
Thus, the correct answer is (B).
Answer:
Water
Explanation:
Abiotic - means things that are not living.
In this passage they talking about water problem and flood, flooding means the covering or submerging of normally dry land with a large amount of water. it means that water is useful but it also dangerous.
The benefit that small spaces provide in the formation of organic molecules is that it creates an additional surface area on which reactions can take place. A larger surface area allows biochemical reactions to take place more frequently, thus increasing the rate of the biochemical reaction.