Biology Help Please ??

[PurpleKnife]

In Ecology, I don't understand the food chain which demonstrates energy flow.

Please explain.

[nid404]

Grass-->Goat--->Fox

in the following food chain energy is transferred from the grass to the goat and then from the goat to the fox.

[goin4dakill]

In Ecology, I don't understand the food chain which demonstrates energy flow.

Please explain.

ANDDD as each organism is eaten, it looses 90% of the energy. So each trophic level, wil have less and less energy, hence the biomass getting smaller, as it goes up

[kam]

if sewage leaks into the lake
can someone tell me wot happens?

[goin4dakill]

if sewage leaks into the lake
can someone tell me wot happens?

oxygen level will decreease.
plants will die.
so will fish.
disease. ***

[kam]

if sewage leaks into the lake
can someone tell me wot happens?

oxygen level will decreease.
plants will die.
so will fish.
disease. ***

but algae increase right?

[sanity_master]

sewage as a source of nitrate (nitrogen compounds) it will be considered as fertilisers which will be used by aquatic plants as algae to grow with high rate...they will grow to a great extent where they will block light from reaching the aquatic plants on the river bed or underwater....they will eventually die, so the aerobic bacteria will on them and so they will consume oxygen in the water......decreasing its concentration so the aquatic plants or animals will die due to suffocation or migrate. This is call EUTROPHICATION.

[Feva]

algae increases i think..

[sanity_master]

yes they DO!

[camel]

if sewage leaks into the lake
can someone tell me wot happens?

oxygen level will decreease.
plants will die.
so will fish.
disease. ***

but algae increase right?

Algae increase, and they rot, on the sea bed. therefore the bacteria use up all the oxygen therefore the fish dont have enough oxygen and die, this is called eutrophication

[Bani]

please help:O/N 2007, paper 1, Question No.29
And can u please tell me the reason the answer is not B, because I  think since there is light, the plant should bend, as auxin will be destroyed....

[goin4dakill]

Whos been -repping me.
What did i do??!

[camel]

Whos been -repping me.
What did i do??!

hello little girl... r u ready?

[kam]

Whos been -repping me.
What did i do??!

someones been doing the same thing 2 me
its very annoying

anywayz thank u all
now i got it
+rep

[Feva]

Whos been -repping me.
What did i do??!

hello little girl... r u ready?

im sorry but that just sounded wrong