Which level of a food chain breaks down dead organisms at every other level?

Which of the following year graphs represent hours of daylight and solar energy at 45° S?

When salt is mixed with water and stirred, the salt will dissolve, forming a solution. When sand is mixed with water, the sand will not dissolve.

Plant growers sometimes sterilize their potting soil by heating it to high temperatures to kill pathogens that might be in the soil. How might heat sterilization of the soil affect the amount of nitrate available to tomato plants grown in that soil?

An agricultural worker is punctured by a tool used in the field. An infection, characterized by the development of a papule that is similar to a cauliflower appearance, develops. The worker is most likely suffering from which type of infection?

What factor causes surface ocean currents

How is information converted in translation

The outer nucleated cytoplasmic layer of a schwann cell is the

A severe storm has churned up the water and defines the along a coastline, causing the water to appear cloudy. How would this most likely affect the marine ecosystem?

The polarity of the water molecule is the result of

How do chemical stains make light microscopes more useful