Coal, a nonrenewable resource, is the most abundant fossil fuel produced in the united states. although environmental laws and modern technologies have reduced the impact on the environment from the production of coal, coal mining continues to disrupt nearby aquatic ecosystems. high concentrations of toxins and heavy metals can be carried as run-off into nearby ponds and streams. how would this affect the sustainability of the aquatic habitat? a) it could kill off any animals, such as fish, that live exclusively in the pond.
b) the heavy metals and toxins will only effect the top predators of the food web.
c) because heavy metals and toxins are not lethal to plants, it will not effect the habitat.
d) the heavy metals and toxins could affect the food web and reduce biodiversity.

The correct answer is (d) The heavy metals and toxins could affect the food web and reduce biodiversity.

High concentrations of toxins and heavy metals can be carried as run-off into nearby ponds and streams. This will lead to Biomagnification. This can be described as the accumulation of substances such as heavy metals and toxins that is eaten by the aquatic animals and move up to the food chain in greater concentration. The zooplankton present in water is eaten by fish, these fishes are eaten by bigger fishes or human beings. The amount of concentration increases as it enters in the food web and reduces the biodiversity.

relationships aren't everything. people everyday spend there entire life depending on reltionships and for someone to be there for them when this is absurd. why must people depend on someone else to bring them happiness? i'm not saying it wrong to feel happy with someone, but people feel that they need to be in a relationship in order to feel happy, when, this is not true. you can paint, write, read ir slend tume with family ir even spend time working in yourself. this can be an exciting experience to find yourself. it's bot wrong to be in a relationship but if you let it be your only source of happiness, than you will never find true happiness.

so, relationships are not always worth it. if you are so dependent on them, than in the end they arent worth it because you will realize how unhappy you really were. some people even tend to cut ties with family because they think they cabt make them happy, obly realtionships with a lover can. false. in order to find true happiness, one must learn to love themselves if they want to love someone else. it's unhealthy to be always depend on relationships and to alqays be in and out of one.

so live life, get that job you always wanted, buy those new shoes and love yourself. depend on yourself, not others. they arent worth it, you can make yourself more happier than most people can do to you. it's not woth it. take your time and have fun.