Need answer asap
which of the following statements about the effects of agricultural techniques on the environment is true?
a.
fertilizer used for agriculture can enter bodies of water, causing eventual oxygen depletion.
b.
pesticides and herbicides are potentially harmful to bodies of water only before they degrade.
c.
agricultural practices have limited impact on the surrounding environment.
d.
tillage is an important agricultural practice that has no known environmental impact.

Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing

The diagram shows the development of the oocyte and the follicle during the menstrual cycle. identify at which stage in the cycle the hormone levels are at their highest and most active.

What evidence could be used to convince policy makers to change a shipping lane from going through a whale breeding ground? information on the number of all whale species currently alive information on the number of all whales hit by boats in the given area information on the number of whale deaths in the world's oceans information on the number of whale offspring born every year. (a) scientists could collect and combine data on fish populations all around the world to show that their populations are declining. (b) scientists collect and combine data on fish populations all around the world to show that their populations are increasing. (c) scientists work together and use past data to show that fish populations are becoming locally extinct in some areas. (d) scientists work together and use past data to show that some fish populations are adapting to environmental changes.