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Sveta_85 [38]
3 years ago
15

The main reason that it's important to test only one variable at a time is so that

Biology
2 answers:
OleMash [197]3 years ago
4 0
This is to make sure the test is reliable because it can happen that the two variables being tested affect each other skewing results
lozanna [386]3 years ago
3 0
Because if we're simultaneously moving/manipulating two different variables it can be very hard to determine why one variable is changing and why the other is changing. While this can be done with more complicated experimental designs, it usually is the case that scientists will only manipulate one variable and not two different ones. 
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please give 2-3 examples (for each one) of producers, primary consumers, secondary consumers, tertiary consumers, and quaternary
Elis [28]
Producers:

One example of producers found in food chains include plants. They use photosynthesis to make their own food. Examples of plants include trees, grass, moss, flowers, and weeds, to name a few.

Primary consumers are herbivores, feeding on plants. Caterpillars, insects, grasshoppers, termites and hummingbirds are all examples of primary consumers because they only eat autotrophs (plants).

Types of Secondary Consumers
Spiders, snakes, and seals are all examples of carnivorous secondary consumers. Omnivores are the other type of secondary consumer. They eat both plant and animal materials for energy. Bears and skunks are examples of omnivorous secondary consumers that both hunt prey and eat plants.


In the real world, a tertiary consumer can eat many different animals and even plants sometimes. This means that they can actually be carnivorous or omnivorous. Some examples of tertiary consumers include, birds of prey, big cats, and foxes.
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3 years ago
True or False: DNA replicates before creating proteins
EastWind [94]

Answer:

True

Explanation:

Hope this helps!!!!

5 0
2 years ago
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zalisa [80]
Absolute dating is a process that determines the age of something in geology, chronology, and geology. 


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3 years ago
Which compound is not made of molecules? a.C6H1O6 b. CO2 c.H2O d.NaCI
Lostsunrise [7]
A molecule is a group of bonded atoms. Answer a, b, and c all have molecules. For example H2O has the molecule H2 in it. The only compound that doesn't share this trait is answer d: NaCl.
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Which of these is a solution?<br> O mercury<br> O apple juice<br> O concrete
Ksivusya [100]
Mercury? Maybe??????
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