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Step2247 [10]
1 year ago
10

What are the independent,dependent, and controlled variables

Biology
1 answer:
Marizza181 [45]1 year ago
8 0
A dependent variable is how they are recording, measuring or keeping track of the science experiment their doing.

A independent variable is the things/types there using to compare what is the most/least affective in the experiment.

A controlled variable is something that stays the same in the experiment or a group/set used for comparison
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PLEASE ANSWER FAST!!!What characteristic makes osmosis different from diffusion?
Papessa [141]
B. Net movement in osmosis is from areas of higher concentration to areas of lower concentration. Net movement in diffusion occurs from areas of higher concentration to areas of lower concentration.
6 0
3 years ago
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Scenario 2 A young leaf needs water in order to perform the process of
Dmitriy789 [7]

Answer:

Vascular system - phloem and xylem

Explanation:

The phloem is responsible for translocating nutrient and sugars which are produced by the leaves to areas og the plant that are metabolically activew while the xylem cell wall transport water gom the root to the leaves.

However, a plant may have many xylem tissues extending up to the plant.

4 0
3 years ago
A male cardinal's red color is an example of a trait affected by natural selection. The females of the species choose mates
kompoz [17]

Answer:

In the cardinals, if the females start using a different criterion than the color of the feather when they choose couple, most likely to happen is that decreased variation in the shades of red because no form of the trait is advantageous.

Explanation:

Options for this question are:

  • <em>Increased variation in the shades of red because the selection pressure has been relieved.</em>
  • <em>Increased variation in the shades of red because the cardinals try different ways to impress the females.</em>
  • <em>Decreased variation in the shades of red because no form of the trait is advantageous.</em>
  • <em>Decreased variation in the shades of red because the only reason for variation was selection pressure.</em>

In the context of natural selection, male cardinals court females using the coloring of their feathers as a form of sexual selection. This means that the shades of red in the feathers are a selection criterion in these birds, and the more visible shades represent an advantage.

But, if the selection criterion was not the color of the feathers, this trait would no longer represent an advantage in the competition between the males to be chosen as a mate. Instead, the trait that would determine sexual selection would be the one that experiences an increase in its variation<em>.</em>

5 0
2 years ago
What kind of animal is this? It was found in a lake.
kodGreya [7K]
It looks like a toothless off of how to train your dragon tbh
4 0
3 years ago
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The correct answer will get Brainliest!
Leto [7]

Answer:

Diversity of the community = 2.097

Explanation:

Given:

Number of pitch pines = 134

Number of douglas firs = 24

Number of red pines = 53

Find:

Diversity of the community

Computation:

Simpson's diversity index = N(N-1)/Σn(n-1)

Particular              n n(n-1)

Pitch pine         134       17822

Douglas firs       24 552

Red pine            53  2756

Total       N=211 21130

So,

D= [211(211-1)] / 21130

D = 2.097

Diversity of the community = 2.097

7 0
2 years ago
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