This document discusses key concepts about the environment including how renewable resources like water can be replenished naturally, while non-renewable resources such as oil have limited supplies. It defines an ecosystem as a community of organisms and physical elements that interact, and notes that tropical areas have greater biological diversity than other habitats. The document also mentions producers, consumers, soil erosion from clearing land, pollution from wastewater, the ozone layer blocking ultraviolet rays, and individual responsibility in garbage disposal.

1. QUICK NOTES ON OUR ENVIRONMENT
 Renewable Resources likewater or fish are replenished
naturally.
 Non-renewable resources like oil or iron ore have a limited
stock that cannot be replenished usually.
 An ecosystem is generally defined as a community of
organisms living in a particular environment and the
physical elements in that environment with which they
interact.
 Tropical areas are rich in biological diversity than other
habitats.
 Green plants are called producers because they can
manufacture food from inorganic raw materials
 A consumer depends on herbivores ,carnivore, parasites
and scavengers for its nutrition
 Clearing of land may result in soil erosion and the eventual
loss of top soil
 Wastewater and sewage can also have a bad impact on
the marine environment
 In the stratosphere, where ozone exists naturally, it blocks
out the sun’s ultraviolet rays and is a lifesaver.
 Garbage disposal is an individual responsibility to keep out
environment clean.