Is fresh water (0.1 % Salt) ISOTONIC, HYPERTONIC, or HYPOTONIC compared to the paramecium?

What happens during the heat transfer within earth

The green colored pigment in chloroplasts is? a. nitrogen b. chlorophyll c. chlorophorm d. chlorofloromethane

Which of the following is the best definition of a eukaryota? a. a one-celled organism that does not have a membrane-bound nucleus b. a one-celled organism that does not have a cell wall c. an organism whose cells each contain a membrane-bound nucleus d. an organism whose cells each have a cell wall