Kayla is learning about ecology and made a study chart.

Which headings best complete the chart?

X: Abiotic
Y: Biotic
X: Biotic
Y: Abiotic
X: Niche
Y: Habitat
X: Habitat
Y: Niche

Covalent bonds are formed between metals and boiling points true or false

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.

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.