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ruslelena [56]
3 years ago
13

There are no billion-year-old main-sequence o- or b-type stars. a. True b. False

Biology
1 answer:
Nataly [62]3 years ago
7 0
True I’m pretty sure! Hope I helped
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What is waters role in light reactions
lisov135 [29]

Answer:

water act as a reactant in light reaction.

Explanation:

Water undergo hydrolysis in presence of sunlight to form proton(H+) and hydroxyl ion(OH-) ion. The OH- ion liberates electron to reaction center of photosystem 1 thereby exciting the later .The excited photosystem then donates that extra electron to the primary electron acceptor and from the primary electron acceptor the electron moves through various electron carriers to generate ATP .

    Basically water act as reducing agent in photosynthesis process.

6 0
3 years ago
Which statement is the best summary of the model?
Molodets [167]
The structures in this list best represent a plant cell.

I hope I helped!
3 0
3 years ago
Allen and andrew both have the same biological parents. Why do they not resemble either of there parents
taurus [48]
This can be because of their genetics. The siblings may not have inherited their parents looks, but maybe they inherited their grandparents looks, or even their aunts looks. This is all due to genetics. It's sort of the same thing, when two caucasian parents have an african-american child. That would be because somewhere along the family tree someone was african-american. 
Anyways, I hope this helps!

6 0
3 years ago
Read 2 more answers
The newborn infant has a number of __________ such as sucking, grasping, and rooting, which aid in his or her survival
ddd [48]
The newborn infant has a number of
( Motor Refluxes) such as sucking, grasping, and rooting, which aid in their survival.
Please hit brainliest and thank you button to help me.
3 0
4 years ago
A flood can wash away important abiotic factors such as soil and rocks that certain biotic factors need for survival.
Degger [83]

Flooding is the term used to characterize the process that occurs when the waters of a river overflow due to rain and occupy the area next to the river, called the river plain. It can have natural or anthropogenic causes and affect vulnerable populations more often.

<h3>What is Biotic and Abiotic?</h3>

The biotic components are all the living things that live in a certain place, while the abiotic components are all the physical, chemical and geological factors of the environment such as water, light, soil, humidity, temperature, nutrients etc.

With this information, we can conclude that A flood can wash away important abiotic factors, such as soil and rocks, that certain biotic factors need to survive, thus flooding affects the ecology of affected regions.

Learn more about flood  in brainly.com/question/13974555

#SPJ1

3 0
2 years ago
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