Answer:
In the water cycle, water changes between its various phases (solid, liquid and gas), but always stays water. In the case of the carbon and nitrogen cycles, various chemical forms of carbon (carbon dioxide, carbonates, sugars, etc.) and nitrogen (ammonia, nitrite and nitrate) are cycled through regularly.
Explanation:
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You crave drugs when you don't get the same experience without them so a lack of a desirable sensation causes drug cravings
Answer:
B. nitrogen-fixing
Explanation:
Nitrogen fixing bacteria are able to change pure nitrogen into ammonia compounds.
Nitrogen fixing bacteria are found in the soil close to the root of leguminous plants. They are get their own nutrition by chemosynthesis.
- They take nitrogen from the atmosphere in form of nitrogen gas.
- The nitrogen gas is converted into fixed nitrogen compounds such ammonia.
Answer: A, genes to form different traits.
Explanation: it’s already a question on Brainly.
