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ki77a [65]
3 years ago
7

Define nitrogen fixation: logistic growth rate: plz:)

Biology
2 answers:
V125BC [204]3 years ago
8 0

They contain symbiotic bacteria called rhizobia within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants; this helps to fertilize the soil.

STatiana [176]3 years ago
7 0
The process by which bacteria converts nitrogen gas in the air into ammonia

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A study was conducted in men aged 40-70 in order to determine whether exercising for 2 or more hours per week decreases the like
Blizzard [7]

Answer: alternative A.

Explanation: In this case, we will consider people that already have had a heart attack. In this specific group of 1,000 people, 236 exercised regularly and had gone through this situation.

We can infer that 23.6% of people who exercised regularly have experienced that by dividing 236/1,000= 0.236= 23.6%.

If 236 people exercised, 1,000-236=764 didn't exercise regularly prior to their heart attacks, so 74.6% were considered to be sedentary.

If there's 0.236 chance out of 1 to exercise and still have a heart attack compared to 0.764 out of 1 to be sedentary and have the same experience, we can divide both ratios to compare them, so 0.236/0.764= 0.3089.

Alternative A claims that people who exercise have around 0.5 chance of having heart attacks compared to people who don't. Since our ratio resulted in 0.3089, we consider this number the closest to 0.5. Alternative <u>B is absurd because in order for people who exercise to have 2x the risk compared to people who don't, the number of people who exercised and went through that must be 2x bigger than people who didn't</u>. Alternative <u>C doesn't apply as well, because we already verified that the chance people who exercise have a heart attack equal to 23,6%. </u>

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5 0
3 years ago
Which of the following is a nonrenewable resource?
marusya05 [52]

Answer;

Gold


Gold is a non renewable resource.


Explanation;

Non renewable resources are those resources of economic value that can not be readily replaced by natural means on a level that is equivalent to its consumption.

Examples of non renewable resources include; fossil fuels such as oil, natural gas and coal; because their source is not sustainable.

5 0
3 years ago
Read 2 more answers
based on the fluid mosaic model of the cell membrane, which type of molecule can move passively across the membrane, without the
Monica [59]

Answer:

My guess would be H₂O/ water, since osmosis is a form of passive transport and I can't see the model the question references. Gases like O₂/ oxygen, CO₂/ carbon dioxide, and simple sugars like glucose can also pass through a cell membrane with passive transport though.

8 0
3 years ago
The chemical that promotes phototropism is _____.
san4es73 [151]
During phototropism, the plant hormone auxin<span> controls cell elongation.</span>
7 0
3 years ago
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The genotype of an offspring defines the physical characteristics or A. phenotype B. probability C. DNA D. cross​
Delvig [45]

Answer:

A

Explanation:

Phenotype is physical charecteristics

5 0
3 years ago
Read 2 more answers
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