Introduction

Question 1

Elements which are critical to the survival of organisms cycle within ecosystems between organisms and reservoirs that are either liquid or gas

Answer 1

oxygen, water, carbon and nitrogen

Question 2

Elements which are critical to the survival of organisms cycle within ecosystems between organisms and reservoirs that are solid

Answer 2

Phosphorus

Question 3

True or False: It begins when they are incorporated from the atmosphere or from weathered rock into the bodies of organisms.

Answer 3

True

Question 4

True or False: The elements are alterable in natural
conditions on earth so they remain in circulation when molecules pass from one trophic
level to another.

Answer 4

False, they are unalterable

Question 5

They can be recycled over and over again as they operate on a open system.

Answer 5

False, open system

Question 6

Objectives of: THE CYCLING OF NUTRIENTS IN ECOSYSTEMS (tinatanong to ni mam iykyk)

Answer 6

Know the major nutrients in an ecosystem that are cycled and recycled by living organisms.
* Understand how the nutrient cycles include both the living biosphere and the nonliving lithosphere, atmosphere and hydrosphere.
* Know the process of recycling of water and some of the important nutrients within the ecosystem.
* Explain the processes of Ammonification, Nitrification, Nitrogen Fixation and Denitrification.
* Understand how the phosphorus cycle differs from other nutrient cycles
* Know how the various nutrient cycles interact.
* Understand the importance of the nutrient cycles to organisms within an ecosystem.