Which air mass is pushed above other air mass as the front moves?

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.

If a grape were placed in a hypertonic solution what would happen and why?

If 360 joules of work are needed to move and create a distance of 4 m what is the weight of the crate