What human activity contributes to air pollution?
A: construction
B: reforestation
C: habitat restoration
D: dam development

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Me with biology endocrine system crossword also image left i need with hw

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2