Answer:
The correct answer would be acrylic glass.
It can be explained with the help of refractive index.
It is a dimensionless number used to describe that how fast a light can propagate through a material.
Thus, the more the refractive index the more will be the bending.
Acrylic glass has the least refractive index as compared to the other materials provided.
Thus, the light would bend the least if acrylic glass would be used.
When you rub it, it creates some electrical forms inside that will charge it
Answer:
The correct answer would be C) It increases survival for cuckoos, but decreases survival of the other birds.
The host chicks often face lots of competition from the cuckoo chicks in terms of food as well as space. It makes it difficult for the host chicks to survive.
It has also been found that cuckoo chicks beg to be fed more intensely due to which host chick die due to starvation.
In addition, in some species of cuckoo, cuckoo chicks remove host eggs from the nest within few days of hatching.
Answer:
It is individual organisms change their genes to adapt to their environment.
correct answer is A
