How did the change in CO2 levels at the end Permian influence other Earth systems?

(A)formation of large ice sheets caused falling global sea levels, destroying marine
ecosystems

(B)increased forest cover in terrestrial environments led to greater weathering
rates, drawdown of CO2, and glaciations

(C)I fresh water from melting glaciers shut down thermohaline circulation in Earth's
oceans, which caused
widespread anoxia

(D)O increased 2 led to the direct death of plants and animals because they could
not handle the change in atmospheric gasses

What happens during interphase? (1)the nucleus grows to its full size. (2)the cell grows to its full size. (3)the nucleus divides into two nuclei. (4)the cell divides into two cells.

Are the layers of rock above and below the coal older or younger?

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).