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Rudiy27
3 years ago
7

Niles Eldredge found evidence in trilobite fossils of a pattern of evaluation in which short periods of large change are mixed i

n with longer periods of time with little or no change. This pattern is called?
Biology
1 answer:
uysha [10]3 years ago
4 0

the answer is Punctuated Equilibrium i do believe, but i could be incorrect.

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Sociobiology is founded on charles darwin's theory of evolution. <br> a. True <br> b. False
Luba_88 [7]

The answer is A - True

7 0
3 years ago
What will happen to blood flow if the resistance to flow increases, while the pressure gradient across a blood vessel remains co
Nana76 [90]

Answer:

As resistance to flow increases, blood flow will decrease

Explanation:

Resistance is a force that opposes the flow of a fluid. In blood vessels, most of the resistance is due to vessel diameter. As vessel diameter decreases, the resistance to flow increases and blood flow decreases.

4 0
2 years ago
How does your sympathetic nervous system use feedback to keep you
Nady [450]

Answer: B. It speeds up your heart rate to help you deal with danger.

Explanation: When you feel you are in danger, your heart rate goes up to get you ready to run, you pump out more adrenaline, and you are more alert. Also, all the other answers are just wrong. In A you would pay more attention, C is the opposite, and in D you would not need to hear when your body is resting.

I hope this helps!

6 0
3 years ago
To investigate a possible relationship between two factors, such as acidity and solubility, you must first identify the variable
Lyrx [107]

Independent variables cause an effect in another variable (<em>acidity, pH</em>). Dependent variables respond on any change in the independent one (<em>solubility</em>). Confusing variables can influence the results if not controlled (t<em>emperature, pressure, surface contact)</em>.

------------------------

Before conducting an experiment, first, the researcher needs to identify the study groups –<em>experimental and control groups</em>- and the variables involved.

  • Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. The researcher changes it on purpose to observe the response of the dependent variable.
  • Dependent variable: Refers to the variable, which response depends on any change in the independent variable. The response might be proportional or inversely proportional to the change in the manipulated variable.

Usually, many factors influence or affect the response of the dependent variables. Most of them are not of interest to the researcher.

  • Confusing variables or confusing factors are closely related to both <em>the dependent and the independent</em> variables, but they are not of interest in themselves. <em>These factors might  </em><em>mask </em><em>the actual </em><em>effects </em><em>of the</em><em> independent </em><em>variables on the </em><em>dependent </em><em>one,</em> causing miss interpretations of the results.  

The researcher needs to identify all possible confusing variables and keep them constant.

  • Controlled variables are kept constant in the control groups and the experimental groups. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.

For instance. You want to study the relationship between solubility and acidity.

  • The independent variable is acidity, which is one of the factors that affect solubility.
  • Solubility is the dependent variable, which responds to the acidity of the solvent.

But solubility also depends on many other factors, such as <em>surface contact, temperature, pressure, and agitation</em>. They are not of interest in this study, but <em>if you do not get to control them, you will not be able to </em><em>discriminate </em><em>the effects of pH from the effects of all these factors</em>.

These are confusing factors, and you need to keep them constant in all your study groups. Only then you will see the real effects of pH on solubility.

----------------------------------------

Related link: brainly.com/question/1479694?referrer=searchResults

3 0
2 years ago
Which statement is supported by the diagram
Vikki [24]
We need the statements and the diagram bro
3 0
3 years ago
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