How many kinds of atoms are there

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

Explain what happens at the saturation point when adding salt to water at room temperature.

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.