Explanation:
Natural selection is a process where organisms that are better adapted to an environment will survive and reproduce. This means that the advantageous alleles of this variant organism are passed on to offspring. Over many generations, the process of natural selection leads to evolution occurring.
Environments change over time, and natural selection acts on the genetic diversity in species. After many generations in this new environment, the current population may not look like their ancestors because natural selection has changed them – they have evolved – to survive in the new environment
Natural selection is the process through which populations of living organisms adapt and change. Natural selection can lead to speciation, where one species gives rise to a new and distinctly different species. It is one of the processes that drives evolution and helps to explain the diversity of life on Earth
<u>Answer:</u>
veins
<u>Explanation:</u>
Veins carry oxygen-poor (deoxygenated) blood back to the heart, whereas arteries carry oxygen-rich blood away from the heart.
The answer to this question would be: HIV
Infection of HIV can cause Acquired immunodeficiency syndrome. The patient immune system is weakened so much that it prone to get infections from the weak pathogen. In this state, the immune system wouldn't be able to fight and suppress cancer cells, cause the patient also at risk of developing cancer.