Air enters through the mouth or nose and travels through the

Each month, the moon starts as a new moon and slowly becomes more visible, appearing larger with time. What is this process called?

Minerals called ores are mined because they contain beautiful substances.

What living organism processes nitrogen in the atmosphere and makes it avalible to other living forms in a usable for

What is not a function of the skeletal system?

How do economics affects science

Suppose that a large river separates two populations of mice. one population is all black, and the other all white. a beaver dam that is built allows the mice to cross the river. over time, many gray mice are born. what is this an example of?

Why is it important to secure the crime scene?

Which two characteristics describe all animals? A. multicellular and symmetrical B. multicellular and asymmetrical C. heterotrophic and multicellular D. heterotrophic and unicellular

In which of these sports may reaction time be least important, basketball, hockey, soccer or bowling? why?

A simplified model of the human blood-type system has four blood types: a, b, ab and o. thereare two antigens, anti-a and anti-b. anti-a reacts with blood type a and ab, anti-breactswith b and ab.