What pattern did erwin chargaff discover in nitrogen bases

What advantage does a crop that undergoes vegetative reproduction have over plants that start from the seed? 1points a they store nutrients. b they can travel farther. c they experience more genetic variation. d they only occur in high-resource environments.

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million

Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.