Please help me it’s overdue by a week What is a boundary between two air masses of different density, moisture, or
temperature?

Answer Choices:

O Station model
O Low pressure
O Front
O High pressure

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.