Answer:
Genetic variation occurs mainly through DNA mutation, gene flow (movement of genes from one population to another), and sexual reproduction. ...
Explanation:
Most mutations that result in genetic variation produce traits that confer neither an advantage or disadvantage. Hope that this helps you and have a great day :)
Carbohydrate is one of the most essential molecules in regulating the bodily activities. This contains hydrogen to oxygen ratio of 2:1. One of its purposes is to provide energy.
Answer:
Density is an intrinsic physical property of minerals that relates to the composition of the mineral and to the pattern in which the mineral’s atoms are arranged.
Answer= Because polar bears depend on ice as a habitat to survive the more the temperature is rising and the sea ice melting as a result of global warming there is basically a possibility that the population of polar bears will decline because there will be no home (habitat)left for them to breed(survive)in.