<em>The 3rd one - fungi, double check</em>
Answer: Solar rays from the sun that take 8 minutes to reach the earth
If scientists collect and store seeds samples this means that they want to have a collection of the species with the objective of being sure that the species won't disappear- with the objective of preserving the species.
If they collect seeds of many species, this means that they're interested in the diversity of species: the correct answer is (4) preserve the diversity of plant species
The relative densities of the water as solid and liquid differ from the subsequent densities of the other substances. The density of the solid form of water is less than the density of water in its liquid form. However, majority of other substances increases in density when they solidify. This is the reason that the ice (which is the solid form of water) floats on water (liquid form).
Hence, the correct answer is 'Water's solid form is less dense than solid form while the case in opposite in other substances'.