PLAAASE HELP The Gila woodpecker lives in the deserts of the southwestern United States. This bird eats insects that damage the saguaro, a common type of cactus. The bird pecks at the cactus to remove the insects. As it pecks, it removes damaged cactus tissue. It also makes a nesting cavity for itself. The nesting cavity does not negatively affect the saguaro. Any nesting cavity not being used by woodpeckers is available for use by lizards, rodents, and other birds. Name examples of predation, mutualism, and commensalism that involve the Gila woodpecker. a. Why would the Gila woodpecker be considered a keystone species in its ecosystem?

b. Name examples of predation, mutualism, and commensalism that involve the Gila woodpecker.

c. What is one way a desert ecosystem would be affected if climate change were to cause a decrease in the Gila woodpecker population?

life would be meaningless without memes

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

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convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.