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 setting needs to be controlled.
it will be difficult to find direct relationships.
this investigation will interfere with the environment.
the true behavior of the animal will not be on display.

Explanation:

1. For "There are many uncontrolled variables": In a comparative investigation of animal visits to a watering hole across seasons, factors like weather changes, predator presence, food availability outside the watering hole area are not controlled, so this is a limitation.
2. For "It will be difficult to find direct relationships": With multiple uncontrolled variables, isolating the effect of season on animal visits is hard, making direct cause - effect relationships tough to determine.
3. For "This investigation will interfere with the environment" and "The true behavior of the animal will not be on display": If researchers are present or if the investigation setup (like using equipment) disturbs the environment, animals may alter their behavior, so these are limitations too. The "The setting needs to be controlled" is more of a requirement for an experimental design rather than a limitation of a comparative (observational) investigation. So the correct statements are "There are many uncontrolled variables", "It will be difficult to find direct relationships", "This investigation will interfere with the environment", "The true behavior of the animal will not be on display".

Answer:

• There are many uncontrolled variables.
• It will be difficult to find direct relationships.
• This investigation will interfere with the environment.
• The true behavior of the animal will not be on display.