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Eddi Din [679]
3 years ago
5

Match each step of the scientific method with its description

Biology
1 answer:
sergij07 [2.7K]3 years ago
6 0
Step 1: State the problem
description: define the problem as clearly as possible.
Example: The front brakes are making a loud noise.

Step 2: Gather information
description: Gather data about the problem and make good observations using all 5 senses.
Example: He checked all his other songs and found they all did the same thing.

Step 3: Form a hypothesis
description: a prediction that can be tested.
Example: Luke decided he would try a different set of headphones and see if that helped.

Step 4: Test the hypothesis
description: Use an experiment to test your logical answer to the problem.
- Use controlled conditions to test your hypothesis
A. Controlled experiment: Everything in an experiment that is the same except for the variable.
~ Variable: Something in an experiment that you change, only one per experiment.
~ Constant: Factors in an experiment that stay the same.
Example: Luke asked to borrow 3 diffetent friends' headphones. All the headphones were the same brand. After switching the ears, he found all the headphones worked. However, Luke tried the headphones in his friend's ipod and found they didn't work.

Step 5: Analyze Data
description: go over all the data you have and go over conclusions.
Example: Luke wrote down all his findings and read over all his notes.

Step 6: Draw a conclusion
description: Based on data and observations, conclude the answer to your hypothesis.
- should be logical answers to the question based on data and observations.
- if needed, retest this theory ( possibly with a new hypothesis)
Example: Luke concluded with his data and and observations that his headphones were broken and he needed a new pair.

Step 7: Share results
description: report journal to classmates, or publish a journal of findings.
Example: Luke shared his findings with his mom and friends, and his mom bought him another pair for his birthday.




I hope this helps!
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10 percent of the energy<span> at any </span>trophic level<span> is </span>transferred<span> to the </span><span>next level.
The rest is lost through the metabolic process. This is due to heat.

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</span>
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4 years ago
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Which of the following examples of natural selection in action would tend to increase the genetic variation in the population?
bearhunter [10]
<h3><u>Answer;</u></h3>

Alpine skypilots evolve large flowers above the timberline and small flowers below the timberline.

<h3><u>Explanation;</u></h3>
  • <em><u>Natural selection occurs when organisms or species with certain genotypes are more likely to survive and reproduce, compared to individuals with other genotypes, and thus to pass on their alleles to the next generation.</u></em>
  • Alpine skypilots evolve large flowers above the timberline and small flowers below the timberline. This is an example of disruptive selection, which increases genetic variation.
  • Longer tails in dragonflies and finches for a particular beak size are examples of directional selection, which decreases genetic variation.
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7 0
4 years ago
In what ways are bacteria similar to humans?
barxatty [35]

Answer:

Humans have about a thousand genes similar to those of bacteria ,because the genes are so vital that thier DNA structure has remained much the same over millions of years of decent from a common ancestor.

Explanation:

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What types of weather events are not yet clearly linked to climate change?
wel

Droughts that are more frequent and severe, storms, heat waves, rising sea levels, melting glaciers, and warming oceans can all hurt animals, ruin their habitats, and disrupt people's livelihoods and societies.

<h3>What is climate change?</h3>

Long-term increases in the earth's average surface temperature, as well as large-scale changes in global, regional, and local weather patterns, are caused by a considerable increase in the levels of greenhouse gases created by the burning of fossil fuels.

Dangerous weather events are growing more common and severe as climate change progresses.

Glacier melting occurs as a result of heat changes, particularly at relatively high temperatures. This is a process in which ice transforms from solid to liquid or water. Scientists have recently detected an alarming rate of glacier melting.

Unusually hot days and multi-day heat waves are a natural component of the weather's day-to-day fluctuations. Hotter-than-usual days and nights are becoming more prevalent as the Earth's temperature warms (see the High and Low Temperatures indicator), and heat waves are anticipated to grow more often and intense.

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8 0
2 years ago
Match the terms to their correct definitions. 1. cell body insulation that speeds up transmissions from other neurons 2. dendrit
Dvinal [7]

Answers:

Myelin sheath 

Axon

cell body

Dendrites

Explanation:

Myelin sheath 

Myelin acts as an insulating layer, or sheath around the nerves. It constitute are protein and fatty substances. It permits electrical impulses to be sent swiftly and effectively through the nerve cells such that an injury to the myelin, will reduce impulses transmission.

Axon

The axon is transmits the signal to the synapse. It's long, thin and tendril-like. it transports electrical signal out of the cell body(soma)to the synapse.

cell body

The cell body houses the neuron that possess the nucleus. It is linked to the dendrites, which transmits information into the neuron while the axon transmits information to other neurons. Its basic function is to coordinate the entire functions of the cell.

Dendrites

Dendrites are branched protoplasmic extensions of a nerve cell that transmits the electrochemical stimulation sent from the other neural cells to the cell body, or soma, of the neuron.

6 0
3 years ago
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