4. what materials are necessary for respiration?

Liquid water turns into water vapor at which step in the water cycle

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

What is a gene ? a) a section of a protein that codes for dna. b) the alternate version of a trait. c) the visible trait in the f1 generation. d) a section of dna that codes for a specific trait .