Chemistry, 24.09.2019 19:30, autumnplunkett09
In an experiment, onion plants of different ages were exposed to various amounts of caffeine to determine the effect of caffeine on cell growth. temperature, amount of water, and light were kept constant. which of these statements about the experiment is definitely true?
a. the results may not be valid because there were two variables.
b. the amount of caffeine used was a control.
c. temperature, water, and light were the only variables.
d. onion plants can be used to model the effects of caffeine on living things.
Answers: 1
Chemistry, 22.06.2019 17:00, BREBRE8932
The biosphere of the earth is made up of what compound? organic or inorganic?
Answers: 3
Chemistry, 23.06.2019 00:30, mariaramirez110379
On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density
Answers: 1
Chemistry, 23.06.2019 01:00, zitterkoph
Which of the following is a physical change? a. burning a piece of wood b. sawing a piece of wood in half c. rust forming on an iron fence d. a copper roof changing color from orange to green
Answers: 1
In an experiment, onion plants of different ages were exposed to various amounts of caffeine to dete...
English, 12.01.2020 07:31
English, 12.01.2020 07:31
Mathematics, 12.01.2020 07:31