GUYS I NEED HELP WITH THIS AS SOON AS POSSIBLE PLEASE ANSWER HERE IS THE QUESTION: (MAKE IT LOWER LEVEL ANSWERS LIKE MIDDLE SCHOOL 7TH GRADE) Explain why the nitrogen cycle is so vital to the life of all organisms.
(DO NOT LOOK IT UP ON GOOGLE PLEASE SEE SOME ARTICLES AND READ THROUGH WEBSITES DO NOT GET IT FROM GOOGLE)

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.