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What is the term that refers to all the populations in a given area?
Bird & Tree: A bird builds a nest in a hole in the trunk of the tree. It is protected from the rain and predators. The tree is not harmed or helped by the bird.
A human & a Tape Worm: The tape worm gets a place to live in the intestines of the human and food from the human. The human loses weight and nutrients from the tape worm.
Tree kangaroos live in the upper branches of trees in the rainforests of Queensland, as well as on the island of New Guinea. This is an example of the tree kangaroos ___.
Study of interactions between organisms and their environment
Which statement best describes the relationship between species A and B?
Species A is the prey of Species B
Species A is a parasite of Species B
Species A is a consumer and B is a producer
Species A and B has a mutualistic relationship
Primary succession is...
When a hurricane causes a river to flood its banks
When a farmer ploughs his fields to remove all existing plant life.
When fire burns through a forest and ills all vegetation less than 1m tall.
When increasing temperature causes a glacier to recede from an area of rocky ground
The secondary succession is
lichens and mosses arrive on bare rock and begin to trap soil
a complex, stable ecosystem is formed
plants grow in an area devastated by a flood
plants grow in a newly formed pond
A keystone species is...
the top carnivore.
has the largest population.
has the most specialized niche.
determines numbers and types of other species.
Starfish are probably the most important predator in the shallow ecosystem because they eat basically anything that they can come across. Their feeding activities control the whole ecosystem. This is an example of the starfish ___.
___ states that two species cannot exist together if they compete for the same resources. One will either die out or migrate, or they will adapt to separate resources.
Limiting Nutrient Principle
Competitive Exclusion Principle
What level of ecological organization would include all squirrels that live in the same area?
Several species of warblers can live in the same spruce tree ONLY because they
have different habitats within the tree.
don’t eat food from the tree.
occupy different niches within the tree.
can find different temperatures within the tree.
Many poisonous animals are brightly colored (red or orange) as a warning to predators. The special coloration is called
Which of the following represents several species of poisonous snakes bearing bright colors of red, black, and yellow?