Answer:
Cervical and Thoracic areas.
Explanation:
The most common sites of injury are the cervical and thoracic areas. SCI is a common cause of permanent disability and death in children and adults. The spine has 33 vertebrae.
Explanation:
Low power objective shows more field of view but does not give appreciable details about the view.
- In the root tip of onions, the cell walls are distinctly visible and they are arranged in a rectangular mosaic pattern.
- The nucleus stands out appreciably and it is tiny.
- The cytoplasm is also visible.
- Root cells do not have chloroplast since they do not take part in photosynthesis.
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Answer:
c The trees will grow and the forest will be restored to its original form.
Explanation:
The ashes from the old trees will serve as nutrient for the new plants. its restores back the ecosystem because the old tress and ashes will decay which will return nutrient to the soil.
the new seedlings will be exposed to fresh air and sunlight which improve there germination.
Answer
Characteristics of young rivers are;
• The river is small and flows with less energy down steep slopes
• Features formed are a result of erosion
• These rivers form V-shaped valley
• Form interlocking spurs when they meet obstacles
Explanation
A river in its youthful stages has a steep river gradient. The river is in most cases narrow and deep. Waterfalls and rapids are common in youthful stages of a river. The river channel is considered narrow and deep, with a V-shaped valley present. Vertical erosion is dominant and the channel of the river generally winds.
Answer:
C.Both Gram positive and Gram negative cells would appear purple.
Explanation:
Gram staining is a technique used to differentiate bacteria to two main groups based on their difference in cell wall components.
Crystal violet, decolorizer(ethanol) and a counter stain are used.
Gram positive bacteria have a thicker peptidoglycan layer hence they will retain the crystal Violet stain even after decolorization. They will stain purple
Gram negative will stain pink due to losing the initial stain and taking up the counter stain after decolorization.
Therefore, if water is used instead of ethanol. Both bacteria will retain crystal violet stain in their cell wall.
