Answer:
The correct option is <em>B) ultraviolet region, especially below a wavelength of 320 nm.</em>
Explanation:
Ultraviolet light carries an enormous amount of energy in it. It is invisible to the human eye. When UV light with enormous energy and wavelength lesser than 320nm, hits the DNA, it causes changes in the structure of the DNA. Mostly, it affects the thymine nitrogenous base regions and forms pyrimidine dimers. The structure of the DNA changes on all the sites where dimers form and hence, they cannot be properly transcribed.
Answer:
Flooding.
Explanation:
Density independent factors exert their influences on population size, and cause erratic shifts on population size. Small population generally at the risk of being wiped out by the density independent factors.
Some examples of these factor includes natural disasters (such as floods, earthquake, and tornados), fires, and pollution effects. The chances of dying of density independent factors not depends on how many individuals are presented in the population.
There is no concrete evidence linking genes to memory in terms of a good one or a poor one. However, there is a possibility that Êmemory-affectingÊconditions like Alzheimer's may be linked to genes.
I think C, but I’m not sure.
Answer:There are so many different kinds of dogs because we've been breeding different kinds overtime.
Explanation:
There is so much diversity in dogs intentionally. Dogs have been a companion of humans for hundreds, maybe thousands of years. We learnt to breed different kinds for different purposes, hence the diversity of dogs.
