b. They show the body virus pieces to prepare it to fight that virus in the future.
The answer is C: Tt and tt.
Answer:
C Darwin
Explanation:
Charles Darwin, the father of evolution theorised that within any population, there exists variation in traits which help the animals adapt to their environment and help them survive.
In the same vein, he believed that the breeds of dogs are all one species, but they have incredible genetic diversity.
Therefore, Charles Darwin first realized that variation mattered, even though he didn't know the exact mechanism.
Answer:
Development of the fetus to grow
oxygen for respiration. nutrients (food and water)
The developing fetus also needs its waste substances removing. The fetus is protected by the uterus and the amniotic fluid , a liquid contained in a bag called the amnion.
<u><em>Hope this helps!</em></u>
