Answer:
a TUNDRA is a vast treeless region bordering the Arctic ocean.The positive and negative interactions that affect populations in the tundra ecosystem .
Explanation:
Tundra is used to describe types of vegetation in the treeless high latitudes between taiga and polar ice caps, and at high altitude across the mountain above timberline.
POSITIVE AND NEGATIVE INTERACTIONS:-
The tundra is perhaps the most fragile of all the biomes because of its short growing season. A willow 10 centimeter ( 4 inches) high may have a trunk 7 centimeter in diameter and may be 50 YEARS OLD.
Human activities in the tundra leave scars that persist for centuries .
FORTUNATELY , for the tundra inhabitants, the impact of civilization is localized around oil mining and drilling sites, pipelines,mines and military bases.
<span>Waste from broken down nutrients in cells is expelled through the excretory system </span>
Of all the choices given this is not a function of the CSF:
- CSF helps to promote mitosis within nueronal tissues.
All the other choices support the correct function and physiology of the CSF within the brain. This clear, colorless bodily fluid supports the brain and its functions.
