Answer:
Chargaff discovered base pairing rules. Franklin took X-ray photographs that revealed that DNA has a spiral structure. This finding helped Watson and Crick create a model of DNA and discover the double-helix.
Explanation:
Answer:
Knowledge of the relationship between the size (volume) of cells and their surface area helps explain the process of diffusion. Agar blocks and cells with the largest surface area to volume ratio (the smaller cubes) have the highest diffusion rates.
Explanation:
D. Coal is naturally made and cannot be renewed by humans.
The answer would be “D,” as gravity is the force that keep all objects on Earth’s surface.
D. An element donates an electron to another element.