Many commercial fertilizers contain high amounts of ________ compounds, which are highly available to bacteria in crop soils, but responsible for the creation of dead zones, such as those along the coast of the Gulf of Mexico.
a. water soluble
b. fat soluble
c. phosphorus and nitrogen
d. sulfur and carbon
c. phosphorus and nitrogen
Many commercial fertilizers contain high amounts of phosphorus and nitrogen compounds, which are highly available to bacteria in crop soils, but responsible for the creation of dead zones, such as those along the coast of the Gulf of Mexico.
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Genes whose expression (or abnormal expression) causes cancer are called
A. carcinogens. B. oncogenes. C. cancer genes. D. progenes.
Plant cells often have a large membrane-bound sac that is used for storing water and other substances called a:
A. central vacuole. B. Golgi body. C. centriole. D. chloroplast. E. nucleus.
The deep-sea soft-bottom food chain is: ____
a. infauna ? meiofauna ? bacteria b. bacteria ? meiofauna ? infauna c. meiofauna ? bacteria ? infauna d. meiofauna ? infauna ? bacteria
The method of DNA replication, where each original strand is used as a template to build a new strand, is called the
A. disruptive method. B. replication and amplification method. C. semiconservative method. D. continuous method. E. conservative method.