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zhannawk [14.2K]
3 years ago
6

On the time line above, cells with a nucleus first appeared on Earth between

Biology
1 answer:
lorasvet [3.4K]3 years ago
6 0

Answer:

These answers are A and C

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What’s a half life of a penny
OLEGan [10]

Answer:

Radioactive isotopes has a characteristic  half life that is ranging from less than a second to million of years.

Explanation:

One of the characteristics of radioactive material is that the radio active isotopes instantly gives off particles. This process is termed as radio active decay.For this activity pennies are used pennies headed up it means that nuclei have undergone radio active decay, or tails up it means that nuclei that haven't  yet decayed.

8 0
4 years ago
Name one plant, and how it is useful to our world today.
Darya [45]

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money plant

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it produces air back in to oxygen. and it also feeds insects.

8 0
3 years ago
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Cyanide, raw sewage, petroleum from shipping accidents, and detergents are all examples of?
topjm [15]

Cyanide, raw sewage, petroleum from shipping accidents, and detergents are all examples of Water pollution.

Water pollution is the contamination of water bodies by substances like Cyanide, raw sewage, petroleum from shipping accidents, and detergents This makes water unfit for drinking, cooking, cleaning, and other purposes. It may provide an environment suitable for growth of bacteria, algae bloom and other parasites which even destroys the life of animals residing in the water body like fishes.

All other forms of pollution eventually make their way to water and disturb the pH of water. Biochemical Oxygen demand (BOD) is the attribute which measures the pollution in water body at surface level.

Hence,Cyanide, raw sewage, petroleum from shipping accidents, and detergents are all examples of Water pollution.

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5 0
2 years ago
Please answer these Biology questions. I need to pass
Vlad1618 [11]

Answer:

okay gimmie like 5 mins I'll look at them then give u awnser

8 0
2 years ago
HELLLLLLLLLLP MEEEEEEEE PLS
goldfiish [28.3K]

Answer:

3 and 4

Explanation:

Both appear to be up river which mean they're coming DOWN to contaminate the uptake. If they're ahead of the uptake facility they're not going to show up in the water. I only know this because of City Skylines :)

5 0
3 years ago
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