The second answer is b. third answer is c
Backward chaining starts with a goal then searches back. Forward chaining starts with facts and searches forward.
Soil, Temperature, and water would be practically the 3 biomes or the aquatic ecosystems. They are both natural and enables you to live successfully. So as for the organism that live there, like plants, the sun supports the plants, also water, and also the soil from the ground. Therefore, those would be the 3.
Plants and animals affect neighboring cells directly because
when in terms with the plants, they use their plasmodesmata in which allowed
them to communicate and affect neighboring cells. While the animals use their gap
junctions that is use for them to communicate and affect their neighboring
cells.