How do scientists obtain knowledge about the world?

Photosynthesis converts light energy to chemical energy. which molecules are the end product of this transformation of energy in this reaction?

Dna is colied into chromosomes in a cell

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism