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

Explain why earth originated from the same solar gas and dust as the sun learning the amount each element in the sun is important to understanding the solar system

Describe three challenges to New Zealand's economic success. What issues might New Zealand face as a smaller island nation?

Without the atmosphere, most life on Earth would be impossible. a. True b. False

How can climate and temperature influence an individual's behavior?

Which of these are correct according to the arrows on the map attatched? The altiplano lies in the midst of which geographic feature? arrow A arrow B Arrow C Arrow D

Sediments are carried from a hilltop to the ground at the bottom of the hill on a windy day. What is the agent of erosion? the hilltop the ground the sediments the wind

What do four kinds of lines that depict the great wall refer to

What is the most abundant element in the universe?

What are two methods that scientists use to predict volcanic eruptions

What is the mass of 8 medium eggs?