When a 4-year-old child has an erection, we can most likely assume:?

All the different species within an ecosystem are collectively referred to as the: (1) niche (2) community (3) consumers (4) population

What is the term used for the elements and compounds before a chemical reaction takes place?

Which can adapt to changes A. alleles B. population C. offspring D. individuals

All of the following are characteristics of fungi except: a. Many fungi are decomposers b. They are heterotrophs c. Reproduce by producing spores d. Fungi cannot cure diseases

Visible light is a type of mechanical wave.

How do mutations allow for viruses to become more widespread?

What are the two subdivisions of the Precambrian Era called?

Habituation refers to a. cognitive process that results in increased response to a stimulus. sensory process in which the change is a fairly short-lived one. sensory process in which organisms adapt to intermittent stimulation.

Francesca, who is pregnant, has just felt the first movements of her developing offspring. Given what you know about prenatal development, at which month of pregnancy would you estimate Francesca to be?

The science of food and how the body uses it in health and disease is called g