Find out what the contractile vacuole in a Paramecium does and why, and report your findings here.

Match the types of competition to their descriptions

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi