That the oxygen levels in the test tube increased and carbon dioxide levels decreased because plants produce oxygen using carbon dioxide
Answer:
mountain and coastal plains
Explanation:
i think it would be coastal plains because the area with low elevation is near the sea. only one answer has coastal plains in it, so use process of elimination. additionally, mountain makes sense since theyre usually steep and end in a peak.
The brain which, along with the spinal cord gathers informationand responds to changes in the environment.
Answer:
B. Replanting trees in deforested areas.
