7. By studying folds, faults, and intrusions in rocks, scientists can determine A) the age of rocks in years
B) the order of past earth events
C) the depth of the ocean
D) if there is life on mars

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

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure

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).