Dinoflagellates select one: a. include species that cause malaria b. are all autotrophic c. possess flagella d. lack mitochondria

Athermometer is placed in water in order to measure the water’s temperature. what would cause the liquid in the thermometer to rise?

If the dimensions of a cube-shaped cell with a length,height, and width of 1 micrometer were to double, what would be the cell's new ratio of surface area to volume? a.3 to 1 b.4 to 3 c.1 to 2 d1 to 6

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled