Gray matter consists of the <u>unmyelinated axons</u> of neurons.
<u>Explanation:</u>
The outer layer of the brain consists of the grey matter and white matter. The grey matter gets its name by the pinkish grey colour obtained by the greyish colour of the neurons and the red colour from the capillaries.
The grey matter consists of the dentrites, axons and cell bodies and this is essential for memory, attention and learning.
The unmyelinated axons are not covered by the fat protein myelin and these axons carry signals.They are the ones to help the processing of information in the brain.
Answer:
In trees, most savanna adaptations are to drought--long tap roots to reach the deep water table, thick bark for resistance to annual fires (thus palms are prominent in many areas), deciduousness to avoid moisture loss during the dry season, and use of the trunk as a water-storage organ (as in baobab).
Answer:
Rapid increases in water temperature cause extensive fish kills
Explanation:
Biotic factors are all living organisms that contribute to an ecosystem. On the other hand, abiotic factors are non-living factors, such as climatic factors (temperature, rainfall, wind), edaphic factors (soil type, soil texture, soil aeration etc). Changes of abiotic factors can have a huge influence on living organisms of ecosystem. The effects might be benefical or harmful.
Some of the most common abiotic factors that can impact a marine ecosystem are water temperature, currents, light, alkalinity, oxygent concentration etc.
Answer:
E. thickening of the tunica intima and loss of elasticity in the tunica media.
Explanation:
Arteriosclerosis is characterized by thickening of the tunica intima and loss of elasticity in the tunica media.
