Does anyone know what are anthropogenic sources of greenhouse gases? if you do please help.

i've only got 85 points so I'll go with 25 to spend on this question. ​

1. environmental factors, such as ph and temperature, can affect the function of an enzyme. a. true b. false 2. which of the following is an organic molecules (ex. vitamins) that an enzyme? a. coenzyme b. product c. active site d. substrate 3. how do enzymes effect the speed of a chemical reaction? a. they speed it up b. they slow it down c. they have no effect on the speed of a reaction 4. during a chemical reaction, an enzyme is used up so that it can only be used one time. a. true b. false 5. which of the following results from a chemical reaction that is catalyzed by an enzymes? a. active site b. product c. substrate d. coenzyme

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

Archaebacteria use for movement. celia flagella pili cell walls