two hawk species are present in the same ecosystem. hawk a feeds on mice and squirrels, both of which feed on seeds. hawk species b eats snakes that feed on mice and squirrels. given what you know about trophic levels and food webs, explain why a given feeding area would be able to support a greater number of hawk a than of hawk b, and then compare the amount of food each species would be expected to eat to survive.

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.

Approximately how many times does an average human heart beat in a lifetime?

30 points why do tornadoes happen more frequently in the summer? they require warm air. they form over large, warm bodies of water. they require dry air. they require dust which is present in the summer.