The third trimester begins at

a. Six months

b. Seven months

How do nerves pass along messages to and from the brain?

What is aseptic technique

In the scenario above, identify the keystone and foundation species. Infer what might happen if keystone species were greatly reduced

What do you call it when a species branches off from the main line on a cladogram?

Neon is a non-reactive gas. Why is that?

The cytoplasm that surrounds the nucleus of a neuron is called the

An ecosystem includes all the living organisms in an area as well as the organisms' physical environment. An ecosystem is occupied by various populations, or groups of organisms of the same species. How can populations best be categorized?

Las bacterias tienen vida propia?

Using a microscope, a student observes a small disc-like green organelle in a plant cell. Which organelle is the student most likely viewing? vacuole chloroplast Golgi apparatus mitochondria

A family has two children. M represents male, and F represents female. What is the sample space for the gender of the children? a. {FM, FF, MM, MF} b. {FF, MM} c. {MF, FM} d. {F, M}