Planaria are flatworms that are found in shallow streams, often attached to the bottoms of
rocks. A class is studying a population of planaria in a nearby shallow stream. The graph
below shows data collected over 11 weeks.
After 5 weeks, the population decreased, and students concluded that the stream did not have
enough food to support a large population of planaria. If the trend continues, how many
planaria will be living by week 12.
A)600
B)500
C)400
D)300

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.