What is the basic level of an ecosystem?

Which best describes how parents affect the genotype of a child? a.the parents decide what to feed their child b.the parents choose whether to educate their child c.the parents allow their child to stay up late d. the parents pass along genes to the child

Would really appreciate it, i have an idea but not completely sure

What type of specimens where you able to see under each of the microscopes in the microscope activity