Pls help me it’s a test!! answer any of these

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?