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Andru [333]
2 years ago
12

How many times does a child have to be vaccinated against tuberculosis​

Biology
2 answers:
aliya0001 [1]2 years ago
8 0

Answer: I believe one or twice, I don't really know though so sorry my friend.

Explanation:

andreev551 [17]2 years ago
4 0

Answer:

It's one time or maybe ttwo

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Why is variety in crop plants important for food security?
aev [14]

Answer:

Disease and Famine

Explanation:

If there is a disease that affects a type of plant, having other types of crops to rely on could save one from starvation. Also, only planting one crop in an area can change the pH and nitrogen levels in negative ways, so that eventually no plants can grow there. Not to mention the obvious balanced diet needed for a healthy body.

4 0
2 years ago
Please helppp me with this
ArbitrLikvidat [17]

Answer: Blue because of google lol

8 0
3 years ago
Climate is best described as
djyliett [7]
The statistics of weather how hot or cold it is

5 0
3 years ago
Match the human activity and how it increases the greenhouse affect
laiz [17]

Answer:

1. primary cause of human-created carbon emissions = burning fossil fuels

2. destroys natural carbon sinks leading to more carbon dioxide in the air = deforestation

3. emits methane from decomposing matter = waste disposal in landfills

Explanation:

1. "Fossil fuels" are <em>nonrenewable resources</em> that are considered essential for the operation of many factories and industries. <em>Burning them accounts for most of the carbon emissions on Earth</em>, and this leads to<em> "global warming."</em>

2. "Forests" are considered "carbon sinks" because they have a role of <u><em>absorbing the carbon dioxide in the atmosphere</em></u>. Cutting down the trees (deforestation) makes forests barren. It then leads to more carbon dioxide in the air.

3.<em> Waste disposals in landfills contribute to the amount of methane that is released into the atmosphere.</em> Methane is considered a <em><u>potent greenhouse gas</u></em> that affects people's health.

7 0
3 years ago
What is the meaning of mitochondria?​ and what are the functions?
Nimfa-mama [501]

Explanation:

mitochondria is a double membrane bound cell organelle,oval or cylindrical in shape.

<h3 /><h3>function</h3>
  • regulate calcium ions in cells
  • formation of yolk
  • help in synthesis of photosynthetic pigments
  • can synthesize store and distribute energy in the form of ATP whenever required
4 0
1 year ago
Read 2 more answers
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