What elements has the same number of valence electrons as aluminum

Biology

1 answer:

Lera25 [3.4K]2 years ago

7 0

Boron (B), Gallium (Ga), Indium (In), Thallium(Tl)

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Compare AND contrast primary and secondary succession.

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Answer:

Primary succession occurs following an opening of a pristine habitat, for example, a lava flow, an area left from retreated glacier, or abandoned strip mine. In contrast, secondary succession is a response to a disturbance, for example, forest fire, tsunami, flood, or an abandoned field.In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.

Explanation:

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Please help, these questions on my hw are confusing to me.

Mariana [72]

10. before replication begins, the strands of DNA are separated and used as templates for the new strands. the replication process creates 2 identical double helixes, each has 1 new strand and 1 old one.

11. without dna replication, damaged cells could not be replaced/repaired and cells need dna, cells would become mutated without dna replication.

12. mutations are rare because dna polymerase proofreads the strands but if the process occurred incorrectly and was not corrected by the polymerase, the cell would become mutated and could be really harmful.

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What kind of growth involves roots and shoots but not reproductive structures and occurs in most plants?

defon

The appropriate response is Vegetative growth. It is the second stage in the life of a plant after it finishes germination and starts photosynthesis. Amid this stage, a plant will be photosynthesizing however much as could be expected to develop as fast as it can before the onset of the blooming stage.

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to correctly measure the amount of water diffusion occurring when water moved over a selectively permeable membrane, you needed

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There are specific methods to be used when measuring the rate of diffusion over a membrane.

In order to accurately measure the rate of diffusion for water through this permeable membrane you need to account for:

The difference in pressure
The surface area of the membrane
The diffusion barrier

It would be correct to state that the speed at which any movement of water occurs is dependent on the pressure being exerted onto the water. This means that when attempting to calculate the rate of diffusion we need to account for the pressure difference. This pressure will be caused by the osmotic gradient.

You will also need to account for the surface area of the membrane and the diffusion barrier. The surface area of the membrane allows us to understand how much space the water has to be able to move from one side to the other. Meanwhile, the diffusion barrier tells us how much resistance the water will have to overcome when diffusing.

By taking all of these parameters into account, we can then use Fick's law to accurately calculate the rate of diffusion for the water and therefore the amount of water that is diffusing through the membrane.

To learn more visit:

brainly.com/question/24746577?referrer=searchResults

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2 years ago

A nucleotide consists of

Vlad [161]

A sugar, a phosphate group, and a nitrogen base

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