PLSPLSPLS HELP ASAP a scientist discovers that the acidity of a lake increases overtime. at the same time, its population of Minnows grew smaller. when the adicity of the lake return to normal, The Minnow population recover.

In what two ways can the minnow population be used to monitor the Lakes water quality?

Which characteristics are typical of a human population in the postindustrial stage?

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).

Why are some people more concerned about shark survival than about shark attacks?