A scientist is designing an investigation to study the impact of predatory trout on the population of the mountain yellow-legged frog in a recreational nature park. What is most likely the test variable (independent variable) for the study?

Trout population

Explanation:

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.

answercharacteristics of place include things like economic activity, architecture,and culture,all of which are human elements that alter or can be influenced by the environment;