During which step in the scientific method should the independent variable be established?

Which muscles, when contracted, would increase the volume of air in the thoracic cavity?

Does the amount of available energy decrease going down the energy pyramid?

Waves interact with different surfaces in different ways. Waves often bounce off objects such as water. What is this form of wave movement called?

What is some 3 facts about toluache xuchal/?

You visit a huge city with millions of people. If you were to start sampling the cystic fibrosis allele from one generation to the next, what should happen to its frequency over the next few generations, and why?

if research is restricted. then the new discoveries made are limited. which action is most likely to increase the number of discoveries scientist can make?

Which statement about nuclear fission is false? a: nuclear fission takes place in the core of the stars b: the fuel for nuclear fission is often uranium c: nuclear fission releases large amount of energy d: nuclear fission is used to generate

Some monkey flowers (Mimulus guttatus) living near the sites of copper mines can grow in soil containing high concentrations of copper, which is toxic to most plants. Copper tolerance is a heritable trait. Select the three statements that are true.

The lowest level of environmental complexity that includes both living and nonliving factors is the A: Biome B: Community C: Ecosystem D: Biosphere

Which part of the endocrine system is located in the middle of the brain