Chemical runoff from fields, oil spills, and erosion is the major source? a. air pollution. b. water pollution. c. hydropower. d. nuclear power

B (Water pollution)

Explanation:

Water pollution is the release of harmful substances -often chemicals and microorganisms- into a water body e.g. stream, river, ocean, lake etc. degrading the quality of the waterbody and rendering it toxic to humans or the environment.

Water is regarded a universal solvent i.e. it has the ability to dissolve more substances than any other liquid on earth. This is the reason why water is vulnerable to pollution or easily polluted as toxic substances readily dissolve into and mix with them, causing water pollution.

Water bodies can be polluted by a variety of substances causing contamination due to pathogenic microorganisms, domestic wastes (sewage and refuse), insecticides, herbicides, food processing wastes, volatile organic compounds, heavy metals, oil spillage from industries, chemical wastes from farms etc. These substances are called POLLUTANTS.

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles