Which of the following is one observation that darwin made as he developed his theory of natural selection?
a. fish, such as salmon, lay few eggs but produce many offspring.
b. fish, such as salmon, never produce offspring.
c. all organisms that are born survive.
d. more organisms are born than can survive.
Answers: 2
Biology, 22.06.2019 02:30, ComicSans10
Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?
Answers: 1
Biology, 22.06.2019 09:30, lilyrockstarmag
Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?
Answers: 2
Which of the following is one observation that darwin made as he developed his theory of natural sel...
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