Biology, 17.10.2019 05:00 superfly903
Levi decides to examine the effect of fertilizer on the growth of tomato plants. he chooses four plants for his experiment and applies varying amounts of fertilizer to the three of them. he does not apply fertilizer to one plant over a 15-day period, the plants receive fertilizer on days 1,4,7,10, and 13. levi measures the height of all of his plants with a meterstick on days 3, 6, 9, 12, and 15. he also makes sure to hold all experimental factors constant except for the fertilizer. what is the independent variable in levi's experiment on tomato plants?
a. the days plant height was measured
b. the measurements of plant height
c. the days fertilizer was applied
d. the amount of fertilizer given to the plants
Answers: 2
Biology, 21.06.2019 20:00
The images show the wings of a bat and a bee. from this evidence, what can you conclude about the evolutionary relationship between these organisms? a. the wing structures of the bat and the bee are different, indicating they didn’t inherit wings from a common ancestor. b. the wing structures of the bat and the bee are different, indicating they inherited wings from a common ancestor. c. the functions of bat wings and bee wings are the same, indicating they obtained wings from a common ancestor. d. the functions of bat wings and bee wings are different, indicating they didn’t obtain wings from a common ancestor.
Answers: 3
Biology, 21.06.2019 23:00
Explain why process 2 is so important to sexual reproduction identify processes 1 and 3 state one difference between the cells produced by process 1 and cells produced by process 3
Answers: 3
Levi decides to examine the effect of fertilizer on the growth of tomato plants. he chooses four pla...
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