Question

1. a scientist is studying why polar bears are at risk of going extinct. what is the branch of science is the scientist studying? natural science social science physical science engineering

Explanation:

Polar bears are part of the natural world. Studying their extinction risk involves natural - world phenomena like their habitat, food sources, and environmental changes, which fall under natural science. Physical science focuses more on non - living matter and energy. Social science deals with human society and behavior. Engineering is about designing and building.

Answer:

natural science