Select the correct answer. George is a principal scientist in a research organization. He studies the cell culture and genetics of the plants, and he is trying to develop technology that will improve plant production and solve other agriculture related concerns. Which branch of agricultural science is he studying?
A.
greenhouse technology
B.
hydroponics
C.
aeroponics
D.
biotechnology
E.
tissue culture

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.