What causes pigment changes and discoloration in plants? Can these changes affect the plant?

If vegetable oil is made out of veggies, then what is baby oil made out of?

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur