Answer:
Option B, Observation 2
Explanation:
The four main observation of Darwin’s areas follows –
Observation 1 – Variation occurs in the species with time leading to evolution. Offspring of two parents vary distinctly in traits such as height, color, weight etc. These variations are also affected by the surrounding environment
Observation 2-
Based on observation 1, Darwin concluded that offspring inherit traits from their parents. These traits improve the odds of survival and only genetic traits will be passed. Traits developed in an individual due to environment will not be passed on.
Observation 3 –
Offspring compete among themselves to survive.
Observation 4
The fittest among the competing species for survival will survive and pass on its traits to the next generation.
Since here the Pigeon breeders want to exemplify the looks (a genetic trait) of parents to their offspring, observation 2 applies here
Hence, observation b is correct
Answer:
yes it uses energy to reproduce inside a host cell
Explanation:
The solution should become hypertonic.
A solution will be called hypertonic if their oncotic/osmotic pressure is higher than the body fluid. When a hypertonic solution is administered, they will attract water from the nearby membrane. This will make a nearby cell become shrink as they lose water. This might be dangerous as the cells as they might go lysis if the amount of water loss is too many.
After the salt absorbed, it will be dumped by kidney into urine. But the salt will also attract water, so you will lose some fluid and might become dehydrated. This is why drinking sea water is dangerous because it will cause more fluid loss in urine.
