What are the characteristics of the inner planets? how do these vary from the outer planets?

Specialized muscle cells that carry the electrical impulses through the ventricles are called

Why are neurotransmitters not considered hormones?

While digging into the ground you find a rock that appears to have formed in the spaces between existing rocks what type of rock could it be

Arrange the following in order from highest to lowest PO2. a. PO2 of pulmonary veins b. PO2 of pulmonary artery c. PO2 of alveolar air

From higher to lower the two layers that plants make up in a tropical rain forest are the

Fatty acids and glycerol are produced from the metabolism of

A rabbit is eating leafy plants on a sunny day. What is happening to the carbon in the plants and in the rabbit? a Carbon is only moving out of the living things; it is not moving into them. b With this information, there is no way to know for sure.

During the process of RNA transcription, which of the following steps is not included?

What is the odd one out of breathing, sweating, respiration and why?

Which surface of the ocean current has the warmest water a. peru current b. north atlantic drift c. brazil current d. canary current