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Musya8 [376]
3 years ago
7

BRAINLIEST AND 100 POINTS FIRST ANSWER GETS BRAINLIEST!!!

Biology
2 answers:
nexus9112 [7]3 years ago
7 0

Answer:

Half-Life is the time for a substance (U-235 in this case) to decay to 1/2 its original mass.

Since the problem is asking for the time for U-235 to decay to 1/2 its original mass (100 grams to 50 grams) then the decay time is 1 half-life, or 700 million years.

hope it helps u kindly mark as brainliest...

horrorfan [7]3 years ago
6 0

Answer:

A stone artifact that formed 700 million years ago

Explanation:

By the details it is said that Uranium-235 was 700 million years old, so it would make sense for it to be stone since it is stone like.

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Explain why the plant with the mutated psaB gene was dying
erik [133]

As given in the graph, mutation in this gene causes a decline in the production of glucose as it obstruct the process of photosynthesis.

<h3>What is psaB gene?</h3>

P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1, and FX, are bound by PsaA and PsaB.

As given in the graph, mutation in this gene causes a decline in the production of glucose as it obstruct the process of photosynthesis.

Thus, the plant with the mutated psaB gene was dying.

For more details regarding plant mutation, visit:

brainly.com/question/8582748

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4 0
2 years ago
A _________ happens when some benefits are lost to gain<br> other benefits
Charra [1.4K]

Answer:

a life event happens when some benefits are lost to gain other benefits

3 0
3 years ago
The fossil record is testament to extinct fauna no longer present on Earth. Certain areas of the planet have always had high spe
prohojiy [21]

Answer: Option (1)

Explanation:

The extinction event played an important role in the creation of new diverse life forms on earth. After an extinction event, both globally and locally, more than 75% of animal species gets vanish and the only those highly resistant life supporting organisms survive and with due course of time, they undergoes evolution, thereby bringing changes to the existing life forms. This is how they initiates and helps in the increasing species diversity.

Thus, the correct answer is option (1).

7 0
3 years ago
Biologists can grow specific plants to detoxify an area contaminated with heavy-metal pollution using the method of . To rid an
Rus_ich [418]

Answer:

Biologists can grow specific plants to detoxify an area contaminated with heavy-metal pollution using the method of <u><em> Bioremediation. </em></u>

To rid an area of mosquitoes, biologists introduced a species of fish into bodies of water that feed on the mosquito larvae. This method is an example of <em>Biological Augmentation.</em>

Explanation:

Bioremediation can be described as a process which uses plants or microorganisms to detoxify contaminants that are present in an area. The enzymes of a plant or animal tend to break down the contaminants and hence, we can make an area rid of contaminants in this way.

Biological augmentation can be described as a method by which organisms such as bacteria are introduced in an area to get rid of wastes.

7 0
3 years ago
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Based on the students' experimental design, state an appropriate hypothesis.
blagie [28]

Answer:

difference between inhalation and fermentation ?? SVT

Please reply! In addition to this, you need to know more about it.

4 0
3 years ago
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