Question

most animals need to maintain a body temperature within a narrow range. endotherms, such as humans and other mammals, can regulate their temperature internally. when the temperature of their surrounding environment changes, endotherms may shiver or sweat to keep their body temperatures within a normal range. for ectotherms, by contrast, a change in the temperature of the surrounding environment will usually affect the animals body temperature. ectotherms often regulate their body temperatures by moving within their environments; for instance, a lizard will lie out in the sun to warm itself up. which term matches the picture?

Explanation:

The picture shows a mammal (horse). Mammals are endotherms, which can regulate their body - temperature internally. Ectotherms rely on external sources to regulate body temperature.

Answer:

endotherms