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babymother [125]
3 years ago
5

WILL MARK U AS BRAINLIST

Biology
1 answer:
MissTica3 years ago
8 0

Answer:

C

Explanation:

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The city of Los Angeles wants to know if there is a connection between physical fitness and air pollution. Fifty volunteers from
zheka24 [161]

Answer:

Control group: volunteer stationary bike riders in a pollution-free chamber

Experimental group: volunteer stationary bike riders in a chamber filled with air pollutants common to Los Angeles

Independent variable: exposure to air pollution

Dependent variable: The heart rates (physical fitness) of the volunteer riders.

Explanation:

In a scientific experiment, data is compared between the control group and experimental group to ascertain the effect of the independent variable on the dependent variable. A control group is the group in an experiment that is not treated with the independent variable i.e. the independent variable is controlled while the experimental group is the group that is treated with an independent variable.

N.B: The independent variable is the variable controlled by the experimenter in order to influence the dependent variable (measurable outcome).

In this experiment, the independent variable is the AIR POLLUTION the volunteer riders are exposed to while the dependent variable is the PHYSICAL FITNESS/ HEART RATES of the volunteer riders, which is dependent on the exposure to air pollution (independent variable).

The control group in this experiment is the volunteer riders placed in a POLLUTION-FREE CHAMBER where the independent variable cannot influence or have any effect on the measurable variable (dependent). The experimental group is the volunteer riders placed in a CHAMBER FILLED WITH AIR POLLUTANTS. The independent variable (air pollution) has been changed in the experimental group.

4 0
3 years ago
What was the first artificial satellite placed in orbit around the Earth? (3 points)
olga55 [171]

The answer would be Sputnik 1. This was a Russian space probe launched during the Space Race between the Soviet Union and the United States.

5 0
3 years ago
Galactosemia is a recessive human disease that is treatable by restricting lactose and glucose in the diet. susan smithers and h
Deffense [45]

There are 3 exclusive mutually birth orders that could

make two affecteds and 1 unaffected - unaffected child first born, unaffected child

second born, and unaffected child third born. Thus, there is a 3/64 + 3/64 + 3/64

= 9/64 chance that 2 out of 3 children will be affected.

 

7 0
3 years ago
Question 3<br> Contaminants and pollutants cannot enter groundwater<br> O True<br> O False
Gala2k [10]

Answer:

false

Explanation:

groundwater groundwater has an abundance of contaminants and pollutants

7 0
2 years ago
Which RNA molecule is involved in translating a short sequence of RNA into an amino acid, acting like a molecular Rosetta stone?
oee [108]

Given what we know about the translation process, we can confirm that the RNA in question that aids in the process of translating a short sequence of RNA into an amino acid is mRNA.

mRNA is referred to as messenger RNA. This RNA molecule acts as just that, a messenger carrying the necessary code to create amino acids and therefore, proteins. This messenger binds itself to <em><u>the </u></em><em><u>ribosomes</u></em><em><u> of a </u></em><em><u>cell</u></em>, which are in charge of reading the code,<em><u> one </u></em><em><u>codon </u></em><em><u>at a time,</u></em> and <u>chaining together the corresponding </u><u>amino acids</u><u>. </u>

To learn more visit:

brainly.com/question/15878647?referrer=searchResults

3 0
2 years ago
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