HELP PLEASE! All rivers have deltas; explain the process that forms these common landmasses. Im not sure what subject to put this in because im doing science and its not an option?

PLEASE HELP THOUGH!

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.

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

In which way are mercury and venus similar? they both rotate from east to west. they are both small and rocky. they both have thick atmospheres. they both are similar to earth in structure.