Associated with energy producing technologies can decrease land fertility.

1) landfill use

2) combustion

3) erosion

4) all of the above

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a. control b. hypothesis c. procedure d. system

Regarding most of the narrator’s story, which word best describes the tone?