Digital signals are like a because there are only two distinct values it can send.

1. Switch
2. Spectrum
3. Computer
4. message

Identify and describe two ways the water cycle affects the salt levels in the ocean

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.