Biology, 04.10.2020 14:01 mandilynn22
Jeremy decides to cook some pasta noodles. He notices that the directions say to add salt to the water before
bringing the water to a boil. The next day, Jeremy asks his science teacher, Ms. Jackson, a question: “How
does adding salt affect the boiling temperature of water?” Of course, Ms. Jackson asks Jeremy to plan and
conduct an experiment to find the answer.
The following question is based on the experiment Jeremy does to find an answer.
Which of the following was the control variable for Jeremy’s experiment?
(1 point)
One quart of boiling water with salt added
One quart of boiling water with no salt added
One quart of room temperature water with salt added
One quart of room temperature water with no salt a
Answers: 2
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Natural selection changes allele frequencies because some survive and reproduce more successfully than others.
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In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.
Answers: 2
Biology, 22.06.2019 10:30
The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?
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Jeremy decides to cook some pasta noodles. He notices that the directions say to add salt to the wat...
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