Answer:
An ecosystem includes the ways these organisms live, feed and reproduce within that particular area. Ecosystems contain many components, but the four main things needed in an ecosystem are plants, animals, rocks and minerals, and water.
Answer:
Until recent history,extinctions have always happened gradually and on a small scale.
Explanation:
Extinction occur when environmental factors like natural disaster,habitat fragmentation,over exploitation,global change don't favor the survival of species thus gradually leads to extinction of species.
Some times human activity becomes the major problem for extinction.More over,poor reproduction,decline in population number and genetic inbreeding also leads to extinction.
99% of all species that exist on earth become disappeared.
Evolution leas to speciation which leas to formation of new species but species become extinct when they are unable to survive against competition.
The correct answer is letter A. Venom glands and varied diets are the reasons why cane toads are considered as invasive species in Australia. They cause major ecological imbalance within their immediate surroundings and have caused an infestation all over Australia.
An impulse relayed along a myelinated axon jumps from node of Ranvier to node of Ranvier.
Answer:
A woody structure.
A single trunk.
The ability to grow tall.
The ability to increase in all dimensions.
Explanation:
