Parasitism is when

A. One organism benefits from another without it being affected

B. Both organisms benefit from a relationship

C. One organism feeds off another, making it weak or killing it

D. Both organisms are hurt from a relationship

Which of these items does not protect against invaders in the nonspecific immune response? A. Stomach B. Cilia C. Pus D. Skin

If the concentration of DDT in zooplankton measures 0.04 parts per million, what is the approximate concentration of DDT at each other trophic level shown?

Sea water is dangerous to drink

Scientists can compare the relationships between all modern species by examining a gene that performs a similar function in species from all kingdoms. what does this one gene encode?

True or false Both chloroplasts and mitochondria lack genetic information in the form of DNA.

Reflection about endocrine

The Consumer Price Index (CPI) measures the

When describing a community, a biologist would discuss A. every population that lives together in an area. B. biome that exists in the biosphere. C. every organism that can produce offspring together. D. every ecosystem that is part of a biome.

What are the 2 elements involved in the sun's production of energy?

The biggest risk factor for the development of skin cancer is excessive exposure to ultraviolet radiation from sunlight. Exposure to UV light in a tanning booth is safer. Is this statement true or false?