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Nat2105 [25]
3 years ago
10

Why is it sometimes difficult for ecologists to design controlled experiments?

Biology
1 answer:
Fed [463]3 years ago
4 0
The answer is: Difficult to control all variables except one being tested
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Which of the following are ways that DNA can undergo mutation? A. During DNA replication, the wrong base is added to the strand
trasher [3.6K]

Answer: Option C.

High-energy waves like UV light or radiation physically damage the DNA

Explanation:

Mutation is the change or alteration that occur in the DNA sequence or nucleotides sequence of an organism which is caused by mistakes when the organism is copied or environmental factors such as UV light.

Ultraviolet light cause mutations by activating the SOS repair systemof which is a part of i a new DNA polymerase that has no power to edit e but has the ability to move past the thymine dimer and synthesize DNA, This lead to cells able to replicate but with a high frequency of mutations.

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3 years ago
5. Which of the following is a pattern of motion in the solar system? (1 point)
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Answer: All planets orbit the sun in the same direction

Explanation: It’s the only true pattern listed there.

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3 years ago
suppose you balanced a sample against three 10-gram masses. Suppose the sample weighed a little more than three masses, but coul
alexdok [17]

Answer: 241.5

Explanation:

Move the slider on the 100 gram beam to the first mark on the right, which is the 100 gram mark. If the pointer still is above the central mark, continue to move the slider to the right. Once the pointer drops below the central mark, move the slider back to the previous mark to the left. If the pointer drops below the central mark at 100 grams, move the slider back to zero.

Move the slider on the 10 gram beam to the 10 gram mark. Perform the same adjustments you did in the previous step until you find the appropriate slot for the 10 gram slider.

Repeat the same process with the 1 gram slider.

Add the values from each slider. For instance, if the 100 gram slider is on 200, the 10 gram slider is on 40 and the 1 gram slider is on 1.5, you would add 200 plus 40 plus 1.5 to get a total of 241.5 grams as the mass of your object in the tray.

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4 years ago
Most of the coal found on Earth today was formed during the Carboniferous and Permian Periods. About how old could a piece of co
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Answer: 298.9 million years old

Explanation: hope it helps luv ❤✨

5 0
3 years ago
Goldman is a psychotherapist who follows the psychodynamic perspective. When treating a patient for a fear of spiders, Dr. Goldm
Mashcka [7]

Answer:

Goldman is a psychotherapist who follows the psychodynamic perspective. When treating a patient for a fear of spiders, Dr. Goldman <u>first has to assists the patient in identifying the unconscious roots of the fear.</u>

Explanation:

The first thing that Dr. Goldman has to do as a psychotherapist to help a patient with a fear of spiders is work with the person to try to find the reason why the patient is scare of spiders and what has provoked this fear. The cause is something that is repressed and operating on a subconscious level, if not, it would be hard for the person to deal with this fear and the cause in an everyday basis, with the help from the therapist the patient can work on this subconscious things and tolerate them.

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3 years ago
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