Explain the process of sexual reproduction in animals

Suppose you are estimating the size of a blue crab population. what is the population size if the number marked in the first catch is 40, the total number in the second catch is 200, and the number marked in the second catch is 50?

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because