I need hel Which other science, in addition to biology, would a biologist use in each of the following investigations? Choose your answer from the drop-down menu below each investigation.

A biologist is studying bacteria that can live in very salty environments.

A biologist is studying how gecko feet are able to cling to smooth vertical surfaces.

A biologist is using ancient pollen grains in rock layers to estimate ancient climate conditions.

1. Chemistry

2. Physics

3. Geology

Explanation:

1. Chemistry; this biologist is studying bacteria in salty environments, and chemistry can help with determining what kinds of salts these are as well as how they are formed from acids and bases.

2. Physics; this biologist is studying how gecko feet can cling to smooth vertical surfaces, and physics can help with determining the forces acting upon the gecko that allow it to perform such a feat.

3. Geology; this biologist is studying how ancient pollen grains in rock layers can estimate ancient climate conditions, and geology can help with determining the fossils located at each rock strata and use radioactive dating to find the ages.

Hope this helps!

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation: