What is the significance of the atomic number, Z, above each atomic symbol in the periodic chart

Sensory cells and sensory neurons allow multicellular animals to sense physical and chemical cues from their environment. what key properties of these cells enable them to perform this function? (select all that apply.

The process by which planetesimals combine with other planetesimals are called

Which cell type, found in connective tissue proper and close to blood vessels, secretes heparin and histamine?

A ball thrown in to the air starts out with an initial upward velocity but eventually slows and stops before falling back to the ground. Which of the following contributes the most to the change in the motion of the all? Question 2 options: a.

What are hydronium ions and how do they affect minerals?

What is a good description for the cell wall?

Compared to modern homo sapiens, archaic homo sapiens has:

Why do mobile advertisers care about driving physical store traffic? answer?

How is martinluther?

What happens when the diaphragm contracts? a. the volume of the thoracic cavity increases. b. the diaphragm rises. c. the volume of the thoracic cavity decreases. d. the rib cage moves down.