Which is a characteristic of arthropod? A. moist skin
B. feathers
C. scales
D. joint-legged​

Transpiration is the evaporation of water from

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

What is the difference between bacterial infections and viral infections?