Which is NOT an example of non-point source pollution? A. Factory dumping chemicals into the water
B. Throwing grass clippings down the storm drain
C. Throwing trash out the car window
D. Washing the car with soap on the driveway

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

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).

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?