Which of the following is an example of voluntary muscle action?

A) fingers typing on a keyboard

B) pupils dilating in reaction to light

C) the heart pumping blood through the body

D) the stomach moving food to the intestines

Relate a transform fault to a fault zone

Which is a substance that is made up of only one type of atom? compound element solution mixture

Will an object of a density of 1.05 g/ml sink or float

The structure of melatonin incorporates two nitrogen atoms. What are the hybridization state and geometry of each nitrogen atom? Explain your answer.

If nitrogen gas is collected over water at 20 o C and the total pressure of the gas in the collection vessel is 200 kPa, what is the pressure of dry nitrogen gas?

What will most likely happen when a warmer air mass exists above a polar ice sheet? The temperature of the ice sheet will be lowered. Heat will be transferred from the air mass to the ice. The air mass will exert high pressure and rise upwards.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?

Of the following reactions, which one produces oxygen gas? Fermentation Anaerobic respiration Aerobic respiration Photosynthesis

Describe the electrodes in this iron-copper galvanic cell.

What happens to wood when it burns?