When a pyrite crystal is hit with a hammer it breaks into pieces with smoothly curved edges what mineral characteristics does this relate to

A. streak

B. luster

C. fracture

D. hardness

Which of the following best defines the nervous system? a. The nervous system is responsible for controlling and coordinating all of the activities of the body. b.

What are the causes of respiratory disorders such as bronchitis, pneumonia and lung cancer.?

consider The response of a plant cell in a hypotonic solution as seen here. imagine a human red blood cell being placed in the same hypotonic solution.

Imprinting and specific bird songs are examples of what kind of behavior

Compared to amphibians and reptiles, mammals are

The scientific name for a plant that reproduces with flowers is a what

How many cells do animals have?

What four substances are recycled during photosynthesis and cellular respiration?

Human development is a complex process. Where does human development occur? A. in a structure of the female urinary system B. in a structure of the female digestive system C. in a structure of the female circulatory system D.

Why do plants not need heterotrophs