Developing crops that are more resistant to attack by pets, is the most important contribution of genetic Engineering to the practice of selective breeding.
In HIV-infected patients, there is a gradual loss of CD4+ T cells over time. These cells, also called T helper cells, organize the immune system's attack on disease-causing invaders, like Salmonella.
Answer:
While asexual reproduction only involves one organism, sexual reproduction requires both a male and a female. Some plants and unicellular organisms reproduce asexually. Most mammals and fish use sexual reproduction. Some organisms like corals and komodo dragons can reproduce either sexually or asexually.
Explanation:
Emigrated means they exited so due to the high amounts of pollution all the animals left which cause a population decrease
