Carla is using a fertilizer that contains nitric acid. How is nitric acid classified? O strong acid
O weak acid
O strong base
O weak base

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.

The model illustrates a process by which a substance is taken up by a cell. which statements describe the process? a. the model shows the process of endocytosis. b. the process shown in the model requires energy from the cell. c. the cell membrane in the model remains intact throughout the process. d. the model shows the process of facilitated diffusion.