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Dmitry [639]
3 years ago
12

Cathy conducts a scientific investigation. How can she make sure her results are valid?

Biology
2 answers:
swat323 years ago
7 0
To keep cheking and redoing the investigation taking her notes and making them more valid
Ksivusya [100]3 years ago
3 0
She compares the data with other outcomes of the same experiment and conducts the experiment more than one time without changing anything

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isabella works for an environmental safety group. her group wants to answer the question “to what lengths must we go to protect
postnew [5]

Answer:

In this case, the question asked is "To what lengths must we go to protect plants and animals?", which is not specific and cannot be used for scientific research.

The ecological researches for the safety of the environment involves the protection of the plants and the animals on the basis of their number and vulnerability to extinction. Almost all the length of the plants are ecologically important and can decrease in number due to the changes in the environment, the length is not a parameter to determine the protection boundary.

6 0
2 years ago
In a combustion engine, fuel is burned to produce mechanical energy. Which of the following shows that an energy transformation
Monica [59]

Answer:

Heat is produced.

Explanation:

Law of conversation of energy and mass these can't be created or destroyed, but can be converted to another form. The fuel/chemical energy is being converted into heat.

6 0
3 years ago
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A family has a Y-linked disease that affects the father. What is the chance of a male offspring inheriting the same disease?
sukhopar [10]
<span>has a 50 percent chance of passing the mutated gene to each child. The chance that a child will not inherit the mutated gene is also 50 percent. </span>
8 0
3 years ago
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What must happen to dna in order for transcription to occur
zheka24 [161]

Answer:

Transcription begins at a gene's promoter, a specific sequence of DNA that acts as a "start" signal for a gene that is to be transcribed. Transcription ends at a sequence of bases that acts as a "stop" signal.

Explanation:

5 0
3 years ago
what differences do you observe in the syringe or its contents before the air was pumping into the syringe and after?
Kaylis [27]

Answer:

what differences do you observe in the syringe or its contents before the air was pumping into the syringe and after?

Explanation:

When an air bubble enters a vein, it's called a venous air embolism. When an air bubble enters an artery, it's called an arterial air embolism. These air bubbles can travel to your brain, heart, or lungs and cause a heart attack, stroke, or respiratory failure.You can compress it, or squeeze it into a smaller volume. When you push on the plunger you can feel the air pushing back. When you stop pushing, the air inside the syringe will return to its original size.

6 0
3 years ago
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