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lakkis [162]
3 years ago
10

Which of the following statements best describes a controlled experiment? a it tests the effect of a single independent variable

b it avoids the use of variables c it shows the effect of a dependent variable on an independent variable d it eliminated the need for dependent variables
Biology
2 answers:
Fynjy0 [20]3 years ago
7 0
A because a controlled experiment only tests one variable.
miv72 [106K]3 years ago
4 0

Answer:

a. it tests the effect of a single independent variable.

Explanation:

This is the best definition of a controlled experiment. A controlled experiment is a scientific test that tests the effect of a single independent variable at a time. This variable is usually adjusted to see its effects on the system that is being studied. Moreover, a scientist performing this kind of experiment has to hold the variable constant to minimize or stabilize its effects.

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What is the name for a complex, organized group of organisms
crimeas [40]

Answer: Community

Explanation:

A community refers to a group of organisms including plants, animals and microorganisms, living and breeding together in a given area.

It is organized because some organisms called producers (plants) produce the food which is eaten by consumers (animals), and after the consumers die, Decomposers (microorganisms) feed on them.

Thus, community is the answer

8 0
3 years ago
Submit your crime-scene notebook, including responses to the following items:
malfutka [58]

Answer:

what grade is this?

Explanation:

8 0
3 years ago
Do you think animals pollinate flowers and disperse seeds on purpose or by accident?
Allushta [10]

Answer:

Animals most likely pollinate by accident.

Explanation:

Deer for example, they may graze in the grass. The pollen/seeds could catch onto their fur--and later fall off into a different area when they walk away. They could also eat a plant, and the seeds end up in their feces. Bees for another example don't necessarily <em>mean</em> to pollinate, they just happen to pick up pollen/seeds when they land on a flower for honey.

Hope this helps :)

6 0
3 years ago
Which of the following statements is NOT part of the Cell Theory?
Elena-2011 [213]
The following statement that is NOT part of the Cell Theory is B
6 0
4 years ago
Read 2 more answers
Review the chart, which shows the population sizes of three African animals in 1990 and in 2000.
iren2701 [21]

The explanation which is best supported by the numbers in the chart is that Lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetahs. Thus, the correct option is A.

<h3>What is Competition in the population?</h3>

Competition in population may be defined as the existence of two or more same or different species that are actively fighting over the same resources and factors that they disseminate.

Competition and predation are the two types of species interaction through which the population of species either increases or decreases.

According to the given chart, it is noticeable that the population drop in predator cheetah and lion populations because of the reduction in zebra lowering population but the in cheetah population is additionally than that of the lion.

Therefore, the correct option for this question is A.

To learn more about Competition, refer to the link:

brainly.com/question/1638475

#SPJ1

4 0
2 years ago
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