Analyze the given diagram of the carbon cycle below.
an image of carbon cycle is shown. the sun, a cloud, two trees, one towards left and the other towards right, an animal, lake, and a factory are included. arrow a points from the sun to the left tree. arrow b points from the air above the clouds to the left tree. arrow c points from the factory towards the air above the clouds. arrow d points from the air to the lake labeled carbonates in water. arrow e points from the label dead organism under the animal to label fossils and fossil fuels. arrow f points from the right tree to the air.
part 1: which process does arrow f represent?
part 2: explain how matter is conserved during the process.
part 3: justify why this process is a recycling of carbon in the carbon cycle.
use complete sentences to explain your answer.

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).