The universe had a beginning and is expanding which is why galaxies appear to be moving away from us. law or theroy

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

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?