Which of the following are not marsupials? a. kangaroos. b. koalas. Opossums. d echidnas. Please select the best answer from the choices provided?​

Microorganisms aren’t all decomposers; in fact, many act as producers or primary consumers in an ecosystem. how do microorganisms that act as producers benefit the rest of an ecosystem in terms of energy transfer? what about microorganisms that act as primary consumers?

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?