Fact 1: Ethologists usually study how animals behave in their natural environment. Fact 2: Ethologists study animal behavior. Given the two facts above, what usually studies how animals behave in their natural environment?
Select from the following.
1). psychologists.
2). zookeepers.
3). looseness of dirt or compost.
4). it's state.
5). that material's properties.
6). teachers.
7). sensory neurons.
8). animal behaviorists.
8).