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➷ Deforestation can contribute to global warming. Trees take in the carbon dioxide in the atmosphere, therefore, removing these would mean there is more carbon dioxide in the atmosphere. Also, growing certain things can release more greenhouse gases into the atmosphere. For example, rice cultivation releases methane into the atmosphere. Furthermore, growing livestock would increase methane emissions. This would mean the global temperature would increase due to global warming.
b) Permacultures may be used. These mimic natural processes and create sustainable and self - sufficient ecosystems. Another method would be stacking. This is where more things are grown in a given space. The plants would absorb more carbon dioxide from the atmosphere.
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The correct answer is active transport. Active transport entails movement of substances against a concentration gradient and requires use of energy in form of ATP and use of protein pumps. Active transport is used to enhance several activities in the body such as movement of nutrients from the small intestines to the blood stream, this ensures that all the nutrients have moved from the lumen,
Answer:
c. Mitosis results in the formation of two new cells with 23 pairs of chromosomes.
Explanation:
A and B are meiosis and D is wrong
Answer:
B
Explanation:
Animal cells don't have a cell wall and are multi-cellular. Plants have cell walls, fungi can be unicellular, and archaebacteria are prokaryotic.