The discharge of high levels of microbial nutrients into marine environments has ________.
A. resulted in algal blooms and red tides that have killed marine mammals
B. resulted in the production of large hypoxic or anoxic regions
C. had negative impacts on shellfish and other bottom-dwelling marine animals
D. All of the choices are correct.
Answer: D
You might also like to view...
Which component is NOT found in a chloroplast?
a. a single outer membrane b. DNA c. ribosomes d. stroma e. thylakoids
All of the following are characteristics of mitochondria and chloroplasts EXCEPT
A) both synthesize ATP. B) both can capture the energy of sunlight. C) both likely evolved from prokaryotic bacteria. D) both are surrounded by a double membrane. E) both possess their own DNA, independent of the nucleus.
Many species of field mice are able to reproduce several times a year and produce litters with multiple offspring. However, an ecologist noted that the population size of mice, as measured in a California grassland, did not change from year to year
The factors that keep natural populations from increasing are collectively called A) scramble competition. B) nonliving factors. C) exponential growth. D) biotic potential. E) environmental resistance.
When we watch Olympic athletes perform, we are admiring the expert control of which systems working together?
A. skeletal, endocrine, and circulatory systems B. muscular, integumentary, and circulatory systems C. nervous, circulatory, and skeletal systems D. nervous, muscular, and skeletal systems