What happens with insecticides and herbicides that we put on our lawns? a. they end up in bodies of water killing animal and plant life. b. they end up evaporating. c. they end up dissolving into the lawns. d. they end up in bodies of water and nourish animal and plant life.

A

Explanation:

Insecticides and herbicides are chemical substances used to eliminate insect pests and weed pests respectively. These substances contain toxic chemical elements like Lead, Mercury, Silver etc referred to as heavy metals. Heavy metals do not get easily decomposed by microbes. Hence, they get washed away by water erosion from lawn they were applied into major water bodies. These elements acts as WATER POLLUTANTS.

Insecticides and herbicides, no matter how helpful they are in eliminating the enemies of agricultural crops/plants, they are very harmful to living organisms. When they get flushed into the water body, they contaminate it and makes the water toxic to living organisms. They become toxic in the sense that, they kill animals like fishes when they ingest them or gets absorbed by plants.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

the correct answer is d