Which of the following organisms first introduced oxygen into earth's atmosphere?
a. cyanobacteria
b. methanogens
c. early protozoans
d. plants
e. green algae

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Pls quickly! which of the following is true about the behavior of an organism? a. the behavior of an organism is influenced by both its heredity and it’s environment. b. the behavior of an organism is influenced only by the treats it inherits from its parents. c. the behavior of an organism is influenced only by the environment in which it lives in. d. the behavior of an organism is not influenced by either it’s heredity or its environment.

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.