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If you think of the planet it is easy to picture the two main ecosystems for the planet. Land and water. These are called Terrestrial and Aquatic. These are then broken down into sub-categories. Hello from Earth Science Coral Springs High School
water movement
Implied
Two main categories are active and passive transport.
Bio contents
If you think of the planet it is easy to picture the two main ecosystems for the planet. Land and water. These are called Terrestrial and Aquatic. These are then broken down into sub-categories. Hello from Earth Science Coral Springs High School
Saltwater/Marine ecosystems and Freshwater ecosystems.
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The two main categories are convenience goods and shopping goods; two lesser categories are specialty items and unsought goods.
Deoxyribose and Ribose
botany and zoology.
descriptive and inferential
heat,oxygen,nutrients.
IT is separated into two main categories (1) those which process information, such as computer systems, and (2) those which disseminate information, such as telecommunication systems.
Plasma & mass
animal and vegetable