Students set up a controlled experiment. they put up five crickets in each of three identical containers. they set one container to 15 degrees Celsius one to 20 degrees Celsius and one to 25 degrees Celsius then they count the number of chirps in each container during 1 hour what is the manipulated variable in this experiment
a. the kind of container used
b. the temperature of each container
c. the number of cricket chirps
d. the number of crickets in each container

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?