Can anyone help me plz Below is a photo of algae, microorganisms that live in water.
What is the role of these organisms in their environment?
A. They produce food that other organisms eat.
B. They return nitrogen gas to the atmosphere.
C. They break down the wastes of other organisms.
D. They cause diseases in many kinds of animals,

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.