When frozen carbon dioxide (CO2) is heated, it changes directly into a gas. Which statement BEST
indicates that a physical change has taken place?
a. Heat caused an increase in gas production.
b. Heat caused a new substance to form.
c. Heat caused a decrease in energy.
d. Heat caused a change in state.
Answers: 1
Biology, 22.06.2019 06:30
Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?
Answers: 3
Biology, 22.06.2019 08:30
Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.
Answers: 1
Biology, 22.06.2019 12:40
Select the correct answer from each drop-down menu. the lac operon in e.coli regulates genes that code for enzymes required for breakdown of lactose. the lac operon is operon that is activated in the presence of .
Answers: 1
Biology, 22.06.2019 16:00
Produce proteins by following coded instructions that come from the nucleus of the cell.
Answers: 3
When frozen carbon dioxide (CO2) is heated, it changes directly into a gas. Which statement BEST
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