What role did the food supply play in shaping the nomadic life of hunter-gatherers and the settled life of farmers?

The battery life of a certain brand of laptop batteries follows a normal distribution with mean 16 hours and standard deviation 5 hours. A particular battery has a life of 10.2 hours. (a) How many standard deviations below the mean is this battery life? (b) What is the probability that a randomly chosen battery has a life shorter than this?

What is a half-life?

Explain the life cycle of Plasmodium, the sporozoan that causes malaria. What features typical of sporozoans does this life cycle exhibit?

Define "third-life" in a similar way to "half-life", and determine the "third-life" for a nuclide that has a half-life of 31.4 years.

Using complete sentences, answer the following questions.
Why are having high self-esteem and knowing how to manage stress important?

What two meanings does the word life have in "It takes life to love Life"--the last line of the poem? Why do you suppose the second Life is capitalized?

Besides the formation of Pangaea, what other major event occurred during the Paleozoic?

A. the first major volcanic eruption

B. the first appearance of life

C. the appearance of complex life

D. the mass extinction of all life

The battery life of a one-year-old cell phone is 75% of its original battery life. When the battery is charged to 50% of its capacity, it dies after $4 \frac{1}{2}$ hours. Find the original battery life of the phone. Justify your answer. You know how long a cell phone battery lasts when it is charged to 50% of its capacity. You also know that the battery life of the phone is 75% of its original battery life. You are asked to find the original battery life of the phone. First, find the battery life of the one-year-old cell phone. Then use this information to write and solve an equation for the original battery life of the phone. Use the plan to solve the problem. Then check your solution.

Draw a Venn Diagram in Your Life. Describe a situation in your life that could be described or organized using a Venn diagram.

True or False. In general, the assumption of rational self-interest means that individuals try to maximize the expected benefit achieved with a given cost.

the smallest unit of life

Why did the growth of civilization make government necessary?

Define life expectancy.