Which form of contraception involves trying to estimate when a female is ovulating and avoiding intercourse at this time?

Which of the following was NOT a change that occurred as the Stone Age progressed? Water shortages required hominids to travel more often. The quality of tools and weapons made by hominids improved. The brain size of hominids increased.

Describe the type of society that would use a traditional economic system. How are the three basic economic questions answered in this system?

how and why North Africa is categorized regionally with Southwest Asia, separate from sub-Saharan Africa.

The end product of the Constitutional Convention was a A. formal statement issued by the federal government B. written plan for government C. ratified agreement with England D. set of amendments to the Articles of Confederation

Carly is trying to remember the name of a particular actor. She can see his face and think of three movies he's been in. She can even recall the name of his current girlfriend, but she cannot come up with his name. This is an example of

1. describe two of the reponsiblities of the department of commerce? 2. Describe three of the responsibilities of the department of agriculture?

How does Earth, the moon, and the Sun move relative to one another!

Does Lincoln change his goal for the war with the Emancipation Proclamation?

What was the primary purpose of secondary school before the 20th century?

Which of the following processes is a type of wind erosion a. plucking b. abrasion c. inflation d. chemical weathering