please answer?

Question

in what ways do the following human activies affect ecosystems?
1.clearing farmland to build a new housing development
2.cutting down trees to make paper and building materials.
3.transporting crude oil across the ocean
4.buring loges in a fireplace
5.growing an apple orchard to sell apples
6.harvesting rare plants to make new medicanes from the chemicals they contain

Answer 1

1-plants make oxygen and are usually producing something beneficial to eat or make fuel. But increasing population means people need houses to live in.
2-Smart eco-friendly tree farms actually help, the land owners plant 3 trees for every one they cut. the trees grow in 20-50 year cycles creating and ongoing renewable supply of lumber. Increasing population causes the need for more lumber and paper.
3-New double hulled tankers are pretty eco-safe barring terrorism. Increasing population causes a greater need for more fuel.
4-Wood fireplaces are very inefficient, waste energy, and release soot particles into the air. Increasing population causes the need to heat more homes
5-Apple trees are great but you are limited to where you can grow them, and it is difficult to do it at a profit. Growing population will eat all you can grow.
6- If the plants truly have medicinal benefits people will cultivate and grow lot's of them and they won't be rare. There may be environmental impacts because the plants must be processed and that will take energy and add to pollution. Increasing populations may consume more than can be produced.

All that said; you may have concluded that the only way to help the environment in the long run is to stop the rapid increase in population. The earth can support only so many of us.

Answer 2

1. killing habitats for one and also killing vegitation for a house that is just gonna pollute.

2. trees provide fresh oxygen, cutting them down for paper decreases our fresh suply, considering the pollution it took to turn the trees into paper.

3. it could sill like it has before and leave everlasting effects on an ecosystem.

4. burning wood also creates greenhouse gases that cause global warming and pollution.

5. well it sounds good ut then u ut chemicals on the orchard and that pollutes and you use tractors and that pollutes, lus transporting the apples pollutes and all that for some money in your pocket.

6. killing rare plants is bad because what if someday during there evolution they could cure a vast amount of diseases we do not know about cause we cut them down to help us relax or fall asleep faster, theres too many variales with that one.

Answer 3

1 way to prevent too much effects on the ecosystem is to plan ahead with say 6 new trees saplings grown for future maximum 3 trees in future in a later time of how many years the type of trees saplings need to be fully grown and hence, the future trees to be cleared.

mercury of love

Answer 4

1. this destroys natural homes of some animals e.g. rabbits
resulting in a change in the food web of that community

2. this also destroys homes of birds...squirrels...etc which leaves
then leaves them vulunerable to predators and also alters the
food chain.

3. can led to oil spills which kill ocean live disrupting the food web
and can lead to extinction of species.

4. this causes air pollution which can cause harm to us as well
other life forms. It also depletes the ozone layer which can
cause harmful effects on the planet.

5. creates homes for some animals e.g. birds...rabbits it also
adds nutrients to the soil. decaying leaves provide food for
organisms e.g. worms.

6. may lead to extinction of rare plants which may alter the food
when animals who depend on them for food now have none.