What caused the barks to turn dark? A. industrial revolution smoke from factories

B. industrial water from that time

Look at the images of different rocks. which rocks have a fine-grained texture? check all that apply. 1 2 3 4 5

Why does bubbling occur when vinegar mixed with baking soda

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.