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3 years ago

Which characteristic is best for identifying whether a rock is intrusive or extrusive?

Biology

2 answers:

irga5000 [103]3 years ago

5 0

Answer:

best for identifying whether a rock is intrusive or extrusive is texture (c)

Explanation:

Alex17521 [72]3 years ago

4 0

C i hope this could help!

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"In the snake experiment, what was the basis for the hypothesis that mimic species benefit from looking" like unrelated harmful

Fantom [35]

Answer:

The contrast in coloration was pivotal to determine if predators attack snakes based on their colors.

It was for studying MIMICRY in snakes.

Assuming all the.snakes were the same the number of attacks will not indicate anything about the effect of the colored rings.

This question on the need for provision of a controlled experiment during experimental investigation. Thus in order to test the effect of a particular condition,another contrasting condition must be provided to determine if the condition under investigation is the actual results obtaned or the influence of other factors in the environment or in the experiment.

The change in the color of the ring is the VARIABLE .In the artificial snake the variable is the presence of this coloed rings against its absence in this snake.

since it changes in the artificial snake

Explanation:

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3 years ago

How does the cardiovascular system help the body maintain homeostasis?

PilotLPTM [1.2K]

Answer:

The cardiovascular system helps maintain homeostasis by continually supplying the central nervous system--the brain and spinal cord--with oxygen and glucose. Brain cells start dying after just one minute without oxygen. The brain is the control center for all of the body's homeostatic processes.

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2 years ago

For the next question, you will be given two scenarios. For each scenario, identify the relationship that exists: mutualism, pre

Aloiza [94]

Prey-predator relationship. Explanation: The relationship between the praying mantis feeding on a bee.

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2 years ago

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A kingdom may be subdivided into several phyla. True False

Katena32 [7]

Very true. There are several phyla

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3 years ago

Hunt and her team designed an experiment to test her hypothesis about the effect of BPA on mice. They administered daily doses o

katovenus [111]

Answer and Explanation: The figure below shows the doses of BPA administered to the female mice over time.

An experiment is used to determine cause and effect among variables. When the research is for the impact of a treatment, researchers randomly separate individuals in two groups:

Control Group doesn't receive any treament or a placebo or a treatment whose outcome is already known;
Treatment Group receives the treatment;

For the female mice on the image below, in the First Group is not injected any dosage of BPA, so they are the control group, while the others are treatment group.

The variables in a experiment are classified as independents or dependents:

Independent Variable is the cause;
Dependent Variable is the effect;

For the BPA research, since it is the effect of BPA over time on the mice's cells it is being investigated, dosage of BPA is the independent variable and time is the dependent variable.

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3 years ago