are the small sacs that are the site of gas exchange in the lungs

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

Graded assignment lab report answer the questions below. which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

Which of the following is not associated with invasive species?