Petroleum is a mixture of many carbon-based compounds. How is the carbon in petroleum released into the atmosphere? A.
Petroleum is burned as fossil fuels.

B.
Plants use petroleum to create oxygen.

C.
Petroleum seeps into lakes and rivers and evaporates.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.

Kinases add - groups to other enzymes. this activities some enzyme while inhibiting other