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Vesna [10]
3 years ago
12

Pre-Test

Biology
1 answer:
astra-53 [7]3 years ago
4 0

Answer:

a.) units

Explanation:

just took the test and got it right

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which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared
Komok [63]
The term referred to the sentence above is : dwarf planet
8 0
3 years ago
Explain how physical and chemical changes affect the mass of a material
jeka57 [31]

Answer:

Explanation:

During a physical change, the arrangement of particles may change but the mass, number of atoms and number of molecules will stay the same. ... During a chemical change, the mass and number of atoms is conserved, but the number of molecules is not always the same. Chemical reactions involve large changes in energy.

6 0
3 years ago
How are rhizomes involved in asexual reproduction of ferns?
Rasek [7]

Answer:

The sporophytes of ferns grow through the rhizome

Explanation:

The gametophyte are responsible for sexual reproduction in plants while the sporophytes are usually responsible for asexual reproduction in plants.

Sporophytes are found in the rhizomes of plants and they help in the asexual reproduction.

This is how rhizomes are involved in asexual reproduction of ferns

7 0
3 years ago
In the same science fair, Tina asks the question "Does caffeine
77julia77 [94]

How many drops of caffeine she drops on the worm is the manipulated variable.

In an experiment, the independent variable is a manipulated variable. Due to the fact that you may alter it, it is termed the "manipulated" one. In other words, you can choose in advance whether to raise it or lower it. Only one variable should be changed at a time throughout an experiment.

The Independent variable is Caffeine's impact. the production and use of nitrogen fertilizers, as well as the burning of fossil fuels in autos, power plants, and industries, are dependent variables that are local in scope.  the heart rate of the worm is the responding variable in this experiment.

When an earthworm is given a stimulant like caffeine, its heart rate rises. Does coffee make an earthworm's heart beat faster? is the research topic upon which the experiment is based. The effect of coffee is the independent variable in this research question, and the response it causes is a change in heart rate (the dependent variable) This brings us to the following theory: "If an earthworm is given a stimulant like caffeine, then its heart rate accelerates."

To know more about manipulated variable refer to:  brainly.com/question/11505552

#SPJ9

6 0
1 year ago
Please help I’ll mark brainliest
nata0808 [166]
I think that it’s A, D, and F

-the particles do not have a charge
-movement across membrane doesn’t require additional energy
-the particles crossing could be oxygen or water
8 0
3 years ago
Read 2 more answers
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