Which of the following is not a challenge of life on land?

a. toxic effects of oxygen

c. energy demands of walking

b. variable air temperature

d. moisture loss

Is there other life in outer space? what life is it?

This physical feature has separated ethnic groups in the Balkans. 1. Iron Gate 2. mountains 3. plate tectonics 4. steppes

Give 3 examples of climate change that you know.

My cat weights 10 pounds and 4 ounces. how many total ounces it's that?

What are the advantage and disadvantages of using export credit insurance rather than a letter of credit for exporting

The primary purpose of Bretton woods conference was to

What was the World Trade Organization decision in 2006 related to genetically modified crops? Individual countries had the right to determine if they were going to allow genetically modified crops to come into their country.

12 out of 50 seventh graders said they would be willing to pay between $21-$30 dollars for a class trip. If there are 350 students in seventh grade, about how many would go oh the trip if it cost $30?

If a population is growing quickly in a small area then what must increase as well

Which body of water is found to the east of costa rica? a. el oc ano pacifico c. el mar del norte b. el oc ano atlantico d. el mar caribe