What impact has the increase in the human population had on the number of invasive species?

A) It has allowed us to eradicate invasive species as they appear.

B) It has led to a decrease in invasive species because humans prevent their spread.

C) It has led to an increase in invasive species as humans accidentally or intentionally transport them to new areas and disrupt ecosystems.

D) It has not had any impact on the number of invasive species because humans do not transport invasive species or affect their survival.

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.

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?