Water is less dense as a solid than as a liquid the answer is D
There may be many forms of a single gene. Each such form is called an allele
Hypotonic - because there is a higher concentration inside the cell than outside of it
The answer is the one which contains plants
Photosynthesising primary producers require sunlight. Therefore, in the ocean, phytoplankton would be concentrated within the surface layers of the ocean where the sunlight penetrates. Phytoplankton support a wide range of marine life: zooplankton feed on phytoplankton, which in turn support fish and so on.
