Which question is most likely to be studied by biologists?
what is the effect of exercise on heart rate in horses?
how does knowledge of phonics affect reading ability?
what is the effect of cooking temperature on the flavor of cake?
does the number of school days affect how much energy the school uses?

The correct answer is what is the effect of exercise on heart rate in horses?

Explanation:

An individual who possesses the knowledge in the field of biology is known as a biologist. It is a multidisciplinary subject that comprises various branches like zoology, botany, and others. Of the mentioned questions, the effect of exercise on the heart rate of the horses comes under zoology category. In this field, one studies about the influence of various constituents found in the surrounding on the health of animals.

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.