Answer:
a) Astrocytes
Explanation:
The astrocytes are components of the central nervous system that provide the necessary supports that the brain needs to perform vital tasks such as learning and other daily activities. They are typical cell types in the central nervous system that aid blood flow in the brain as well as the migration of neurons.
Answer: Choice C) X; the activation energy is greater in an uncatalyzed reaction
Explanation: I got this question on khan academy.
Answer: A heterozygous genotype stands in contrast to a h o m ozygous genotype meaning that there are different portions where the sequence is different.
Answer:
<em>Two main types of Tundra:</em>
- Arctic tundra is the tundra region which can be found in the northern hemisphere close to the regions of Alaska, Greenland, Siberia.
- Antarctic tundra is the tundra region found near the Antarctic peninsula.
<em>Biotic factors of Tundra:</em>
Biotic factors can be described as the living components of an ecosystem. The biotic components of the tundra include fungi, mosses, shrubs, insects, fish, birds and mammals.
<em>Abiotic factors of Tundra:</em>
Abiotic factors can be described as the non-living components of an ecosystem. The abiotic components of the tundra include temperature, wind, rain, snow, sunlight, soil, rocks and permafrost.