Which of the following methods involves counting the number of organisms in a specific area? a) mark/ recapture b) direct observation c) sampling d) indirect observation

Plz ! having a smooth seeds is the dominant trait. having wrinkled seeds is a recessive trait. the offspring of two plants with smooth seeds, a. must have smooth seeds. b. may have smooth or wrinkled seeds. c. must have wrinkled seeds. d. have a 25% change of having smooth seeds.

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun