The correct answers are 2. arid climate and 4. oil resources
The climate always causes environmental climate, especially arid one, while oil both extraction and production creates environmental problems.
Answer:
An allele is a diffrent form of genes
Well basically it shows the genetic history of a group of related individuals.
1. In sexual reproduction, more variations are produced. Thus, it ensures survival of species in a population.
2. The new formed individual has characteristics of both the parents.
There are a couple more but i think these are the most important when you compare the two.
