All matter has both physical and chemical properties. A physical property can be observed without changing the identity of the substance. Which is a physical property? A. ability to rust
B. density
C. flammability
D. reactivity with the water

How do limiting factors most affect population size? ostop population growthrestrict population growthincrease population sizeresult in positive impactso

Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each of these numbers in an alternate form.

What is the body’s main processing system? it uses input from various parts to control voluntary and involutiontary movement. it’s composed of two main parts-the brain and spinal cord. a. nbs b. cns c. ans d. pns