Chapter 19 - Human Effects on Ecosystem

Located in the oceans, lakes and rivers, where fish has to be captured or fished.

Formed from the fossilised remains of dead plants and animals.

Contribute to humidity by transpiration and extract groundwater through their roots to be released into the atmosphere.

Undergoes a process of bacterial digestion to reduce the amount of organic matter and the number of disease- causing microorganisms present.

Convert atmospheric carbon dioxide into glucose during photosynthesis.

They are prone to overfishing and ________, which could lead to an imbalance in the ecosystem.

The act of protecting species, their habitats and entire ecosystems from extinction.

The gas returned to the atmosphere when cellular respiration takes place in living organisms.

The ________ left behind from the sewage treatment process is known as sludge.

The contamination of the environment causing harm and damage to the ecosystem.

When the ________ and animals die, decomposers break their organic matter down into carbon dioxide and other simple substances.

The process of clearing forests for timber and land

Break the dead organic matter down into carbon dioxide and other simple substances.