Answer:
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Explanation:
1 )
The five steps of the scientific method
Step 1: Ask a question or identify a problem. A scientist learns about the universe by observing
Step 2: Background research.
Step 3: Form a hypothesis.
Step 4: Experiment and observe.
Step 5: Draw a conclusion.
2 ) Matter is the stuff that makes up the universe everything that takes up space and has mass is matter. All matter is made up of atoms, which are in turn made up of protons, neutrons and electrons. Both atoms and molecules are held together by a form of potential energy called chemical energy.
3 ) Some physical characteristics of matter are shape, color, size, and temperature. An important physical property is the state of matter. The three fundamental phases of matter are solid, liquid, and gas.
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Answer:
Speed (c) = wavelength (λ) × frequency (f)
Explanation:
The wavelength denoted by (λ), is the distance between two successive waves. The wavelength of a wave us calculated by using the formula: (λ) = c/f.
Where; λ= wavelength
c= velocity or speed
f= frequency
Based on this, the speed of a wave can be calculated by making (c) the subject of the formula in λ=c/f.
We have; c = λf
Hence, the speed of a wave equals the wavelength (λ) multiplied by the frequency (f).
Although the actual questions are missing from your ask, here's how you can tell.
If the study will be messed up (added bias) through interaction with the subjects the study should be observational. For example if a biologists wanted to study the eating habits of wild birds in the tropics, they would need to do an observational study. if they did a controlled experiment, the birds will change their eating habits based on human interaction, thus making the study invalid.
If the study requires specific measurements, close monitoring, or contact and interaction with the subjects the study should be a controlled experiment. For example, if a scientist wanted to test out a new drug, the health of patients would need to be closely monitored.
Mitochondria in animal cells, while mitochondria and chloroplast in plant cells most closely resembled prokaryotes.
<h3>What do you mean by endosymbiotic theory?</h3>
This theory states that organelles such as mitochondria and chloroplast in eukaryotic cells were once prokaryotic microbes.
These organelles when occupied in prokaryotes divide by binary fission. But they become a part of the eukaryotic cell now and result in a symbiosis relationship between each other.
Therefore, Mitochondria in animal cells, while mitochondria and chloroplast in plant cells most closely resembled prokaryotes.
To learn more about Endosymbiotic theory, refer to the link:
brainly.com/question/1698852
