Introns represent a genome scrap yard that provides DNA segments for genome evolution and a variety of small RNA molecules.

Plz plz plz quick! 49 points for whoever which of the following statements about greenhouse effect is true? *life on earth is suffering because of greenhouse effect *the greenhouse effect is caused by human activity *all greenhouse gases are harmful *life on earth would not exist without the greenhouse effect

Will mark brainliest. (20 points) many have pigments structures known as eyespots that detect direction of light. a. b. archaebacteria c. protists d. none of the above

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this