Question

practice it!
brad and sue decided to go deeper into the investigation at the water hole.
the zoologists choose to conduct a comparative investigation, which involves more than just making observations of the behaviors of the animals at the watering hole. they want to know how many of each species of animals visit the watering hole in the winter months versus the summer months.
select the statement(s) which address the limitations of this type of investigation.
there are many uncontrolled variables.
the true behavior of the animal will not be on display.
the setting needs to be controlled.
this investigation will interfere with the environment.
it will be difficult to find direct relationships.

Explanation:

1. "There are many uncontrolled variables": In a comparative investigation of animal visits to a watering hole across seasons, factors like weather fluctuations, predator presence, and food availability (uncontrolled variables) can affect results, limiting the investigation.
2. "It will be difficult to find direct relationships": With multiple variables (season, animal behavior, environmental factors), isolating direct cause - effect relationships between season and animal visit counts is hard, a limitation of this comparative study.
3. "This investigation will interfere with the environment": The presence of zoologists studying at the watering hole can disturb the animals' natural environment, affecting their behavior and visit patterns, which is a limitation.

The statements "The true behavior of the animal will not be on display" is incorrect as the investigation is about counts of visits, not necessarily about observing true behavior in the sense of being hidden. "The setting needs to be controlled" is more relevant to experimental investigations; comparative investigations like this often observe natural settings, so controlling the setting is not a limitation of this type of investigation.

Answer:

• There are many uncontrolled variables.
• This investigation will interfere with the environment.
• It will be difficult to find direct relationships.