BIOLOGY MIDDLE SCHOOL

What are 4 reasons why plants are considered an important biotic factor in an ecosystem?

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Answer 1
Answer: To answer your question it gives you air, it produces carbon-dioxide, and i forget the other 2. I hope this Helped.

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List two non-living (abiotic) forms of carbon in the cycle and give the chemical formula of each.

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Two abiotic forms of carbon are CARBON DIOXIDE AND METHANE.
The element carbon is continuously been recycled in nature. The abiotic components of the carbon cycle refers to the non living part of the carbon cycle which has influence on the living part. Methane is a type of fossil fuel whose major component is carbon.
The chemical formula of carbon dioxide is CO2 while that of methane is CH4.

An allele whose trait is masked in the presence of a dominant allele is called

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recessive alleles are masked by dominant alleles

Question: An allele whose trait is masked in the presence of a dominant allele is called

Answer: the answer is recessive allele :)

You are trying to identify a one-celled organism. You know that the organism has a cell and nucleus and produces its own food from sunlight. What kingdom does the organism belong to?

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PLant.........................................
the plant kingdom?....

Unlike ionic bonds, covalent bonds involve the

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Sharing of electrons. Ionic bonds involve giving and taking of electrons. Another difference is that ionic bonds are between metals and nonmetals. Covalent bonds are for nonmetals only. Use whatever is suitable.
Ionic bonds involve the gaining or losing of electrons, giving the atoms a charge. The charge can be positive, called an cation, when it losing electrons. Also, it could be negative, called an anion, when it gains an electron. Ionic bonds are oppositely charged. Which means that one must be positive and the other negative.
Unlike a ionic bond, a covalent bond involve the sharing of electrons, giving it a neutral charge. Their are two kinds of covalent bonds: polar and non polar. 

A Hertzsprung-Russell diagram is provided.In comparison to the Sun, which of the following best describes Betelgeuse?
Group of answer choices

Smaller in diameter

Cooler and brighter

Brighter and hotter

Less bright, but hotter

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Less bright but hotter

List and compare the levels of organization within ecosystems

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Levels of organization in ecosystem:
1.Individuals or organisms
2.Population- A group of organisms of a given species that live in a specific area at a given time
3.Comunity- All of the populations of different species that live in the same area and interact with one another
4. Ecosystem- Community (biotic) interacting with the environment (abiotic)5.Biome- A group of ecosystems sharing similar characteristics
6. Biosphere-The sum of all the ecosystems established on planet Earth.

The levels of organization in an ecosystem are:

Species - a group of genetically related individuals that can breed to produce fertile young. The individuals are not necessarily members of the same species. 

Population - a group of same species that interact with one another and reside in the same location.

Community - a population comprised of different species that interact with one another and reside in the same location.

Ecosystem - includes all non-living aspects and the living population of the environment. It comprise both abiotic and biotic factors in the area. 
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