Question 1 (1 point) Dinoflagellates have a cell wall that is made of?

A-silica
B- cellulose
C- strontium
D- calcium carbonate

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull