Check all statements below that are true. all organisms must compete for survival. when organisms struggle to survive, they usually mutate to increase chances of reproduction. some organisms have phenotypes that make them better competitors than others in their environment. animals undergo natural selection, but plants and other organisms generally do not. natural selection continues to occur even today. phenotypes found in the most successful members of a species become the most prevalent after several generations. a decrease in food availability will increase the variation in a population.

1. True

2. False

3.True

4.False

5.True

6.True

7.False

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as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

answer:

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.