Why can't chemical changes be reversed? examples to explain

Which statement is true about the current understanding of the composition of the universe. A) Roughly 70% of the mass of the universe is normal "everyday" matter. B) All energy in the universe is bound up as everyday "normal" matter.

Think about water and how it rolls up on a beach. think of all it's qualities. is it alive according to the characteristics of life? why or why not?

Through which valve will blood flow when leaving the right atrium?

How is the redundancy of the genetic code like "Natures Safety Net"?

When a cell is in interphase is the dna in the form of chromatin or chromosomes?

How are the words balance and homeostasis connected?

The members of these kindoms all have cell walls. Which kingdoms are they?

Which description best contrasts adipose and muscle tissue? A.) Adipose tissue makes up bone and cartilage, while muscle tissue covers muscles. B.) Adipose tissue links bones to ligaments, while muscle tissue links bones to muscles. C.

Look at the food chain illustrated here. Frogs react very quickly to changes in their habitat. What would happen to the food chain if the frogs began to die off? A) The number of insects and grasses will get larger.

The development of the horse in the fossil record shows