What organic compound are most enzymes made of

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?

Kudzu vines grow by climbing and wrapping around trees. trees covered by kudzu can die because they are starved of sunlight. what type of relationship exists between the trees and the kudzu growing on them?