The graph shows the effects of changing the temperature, light intensity and carbon dioxide concentration on the growth of lettuce plants.
400
4% CO,. 25°C
300
4% CO., 15°C
Mean mass
of lettuce
plants after
21 days
200
in grams
100
0.03% CO., 25°C
0.03% CO 15°C
0
2
8
10
4
6
Light intensity in arbitrary units
(a)
Describe and explain the effect of increasing light intensity on the mean mass of
lettuce plants at 4% carbon dioxide and 15°C

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Science which of the following is an example of a cyclic behavior that is seasonal? i think the answer is d, i just need to double check : ). a. running from predators. b. searching for water. c. hunting at night. d. migrating for warmth. ***

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.