Which describes the conditions of early Earth's surface?
a. Molten rock that spewed gases
b. Barren desert.
c. Covered with tropical rainforests.
d. Completely covered with oceans.
e. Covered with an ice sheet several meters thick.
a
You might also like to view...
Most nutrient absorption takes place in the (select all correct choices):
A. duodenum. B. jejunum. C. ileum. D. colon. E. appendix.
Which diagram correctly illustrates the distribution of ions in a resting neuron? (Note: A larger symbol indicates a higher concentration of that ion.)
A. A
B. B
C. C
D. D
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
Gather Content/Choose Answer
· What do you already know about ions in cells? What other information is related to the question?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Heartburn is caused by the action of _______ on the ______
a. acid; esophagus b. acid; stomach c. mucus; heart d. proteolytic enzymes; esophagus e. proteolytic enzymes; stomach
What is the main role of kidneys?
A. To filter blood and remove toxins from it B. To secrete hormones that help in osmoregulation C. To secrete enzymes that help in digestion D. To replenish oxygen in the bloodstream