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seropon [69]
3 years ago
14

How many factors should a well-designed experiment test at one time? A. 1 B. 2 C. 3 D. depends on the number of experiment varia

bles
Biology
2 answers:
pishuonlain [190]3 years ago
8 0
A well-designed experiment should<span>  </span>test  1 factor at one time.
devlian [24]3 years ago
3 0
The well - designed experiment test one factor at a time. The answer to the question above is letter A. 1. The items that are being tested are the independent variables and that they cause the dependent variables to change.
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Part C
Black_prince [1.1K]

Answer:

they are absorbed

Explanation:

when one color is reflected on something, the rest of the colors are absorbed by it.

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2 years ago
Which two oxides are emitted into the air when power plants produce electricity? 
Alinara [238K]

Answer:

sulfur oxide and nitrogen oxide

Explanation:

these are released from power plants along with carbon dioxide

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3 years ago
Which end of an earthworm contains an organ that can detect smells?
NNADVOKAT [17]
<span>The anterior end of an earthworm contains an organ that detects smells. Evidence of this is the way the earthworms responded to the ammonia. The earthworms backed away from the ammonia when it was waved near their anterior end, but they did not respond at all when the ammonia was waved near their posterior end.</span>
7 0
3 years ago
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What makes greenhouse gases different from other atmospheric gases?
Effectus [21]

Answer:Greenhouse gases allow thermal energy to pass through the atmosphere and back out into space

Explanation:

4 0
2 years ago
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Variation in great horned owl body size due to food supply can / cannot be acted on by
disa [49]

Answer:

Variation can be acted on by natural selection.

Explanation:

Variation are the difference that exist in the organism in terms of the body size and can be acted upon by natural selection.

Natural selection could act on the owl body size, favor the selection of owl with small body size especially when resources available are limited and can only sustain small number of individuals leading to availability of owl with small body size in such area and a gradual reduction in the number of owl with large body size.

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