B) is the correct answer. The flu virus does not have the same genetic makeup each year as with each individual it infects its rapidly mutating.
Answer:
Match the items of column 'A' with those of column 'B':
Turbidity
Reduces the light in the water column
Natural pollution
Choose
Nitrates and phosphates
Air pollution
Biochemical demand for oxygen
Contaminants into a natural environment
Chemical fertilizers
Pollution
Floating materials
Industrial wastes
Emissions pollution
Reduces the light in the water column
Concentration of hydrogen pH
Eutrophication
CFCS
New species invasion
Temperature
Harmful algal blooms
Oils fats, and foam
Please answer all parts of th Hypertrophication
Toxicity
Volcanic
In crude oil affect eggs and larvae of fish a
Atomic number
a. Hydrocarbon
4,000 species can be found around the world
