Quesuon Environmentalists are monitoring an area
of tropical forest that is being
deforested because of human activities. The graph here shows the scientists
predictions based on the data they have collected.
Tropical Forest Deforestation
100 100
BO
70
roes Remaining
53
40
10
0
2010
2015
2020
2025
2030
2035
Year
How is the ecosystem likely to change as a result? Select the two correct
answers.
A. Decrease in biodiversity
B. Gain of species
C. Loss of habitat
D. Gain in oxygen

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.