Enviromental Science
ENVS 1000 – Environmental Science - Winter 2014 - Assignment # 1
This Assignment is worth 6% of your final mark in ENVS 1000
Assignment # 1 is due by Thursday February 6, 2014 (by 5 p.m.) through the Blackboard Assignment Box.
NAME: STUDENT #:
Part 1: QUESTIONS BASED ON THE MOVIE “HOME”
As you watch this movie, answer the following questions IN YOUR OWN WORDS. Keep answers brief and concise. (Note: You do not need to use all of the space provided for each question)
1. Questions on Earth’s History:
(a) What were three characteristics of the early Earth?
1) Conserve water in perfect forms
2) Molten rocks
3) Atmosphere lacking with oxygen
(b) What are cyanobacteria and why are they important to the history of life on Earth?
Cyanobacteria are single celled organisms that are referred as “blue – green algae”. They can be found in colonial and filamentous forms. Cyanobacteria specialized for nitro fixation are called heterocyst, which obtain their energy through photosynthesis. Cyanobacteria increases the oxygen in the Earth’s atmosphere. Cyanobacteria is important to the history of life on earth because it produced atmospheric oxygen.
(c) What is meant by “the engine of life is linkage”? Why is this important?
“The engine of life is linkage” means that everything is linked in one technique or another. Each method must be followed by another, nothing is self-sufficient. An example of this would be the hydrologic cycle, in order for condensation to arise; the water must complete evaporation and so on. This is important because from the presence of one being, another existence is formed. Likewise without this linkage life would not be possible.
(d) What is the major source of oxygen on Earth today?
The major source of oxygen on Earth comes from plants in the ecosystem. Plants take in carbon monoxide and gives off carbon
This Assignment is worth 6% of your final mark in ENVS 1000
Assignment # 1 is due by Thursday February 6, 2014 (by 5 p.m.) through the Blackboard Assignment Box.
NAME: STUDENT #:
Part 1: QUESTIONS BASED ON THE MOVIE “HOME”
As you watch this movie, answer the following questions IN YOUR OWN WORDS. Keep answers brief and concise. (Note: You do not need to use all of the space provided for each question)
1. Questions on Earth’s History:
(a) What were three characteristics of the early Earth?
1) Conserve water in perfect forms
2) Molten rocks
3) Atmosphere lacking with oxygen
(b) What are cyanobacteria and why are they important to the history of life on Earth?
Cyanobacteria are single celled organisms that are referred as “blue – green algae”. They can be found in colonial and filamentous forms. Cyanobacteria specialized for nitro fixation are called heterocyst, which obtain their energy through photosynthesis. Cyanobacteria increases the oxygen in the Earth’s atmosphere. Cyanobacteria is important to the history of life on earth because it produced atmospheric oxygen.
(c) What is meant by “the engine of life is linkage”? Why is this important?
“The engine of life is linkage” means that everything is linked in one technique or another. Each method must be followed by another, nothing is self-sufficient. An example of this would be the hydrologic cycle, in order for condensation to arise; the water must complete evaporation and so on. This is important because from the presence of one being, another existence is formed. Likewise without this linkage life would not be possible.
(d) What is the major source of oxygen on Earth today?
The major source of oxygen on Earth comes from plants in the ecosystem. Plants take in carbon monoxide and gives off carbon