What is sample?
Within a population, organisms are always being ____ /_____
What is born and dying?
For a(n) _______ to be healthy, it has to have lots of different kinds of plants and animals.
What is an ecosystem?
________ are finely tuned systems in which organisms and the nonliving things around them interact.
What are ecosystems?
The largest ecosystem in the world.
What is the ocean/sea?
A group of the same type of organism living in the same area
What is a population?
A system can be _____ even as things are being added and removed.
What is stable?
All living things depend on _______.
What is other living things?
_______ is a word that ecologists use to describe how much variety there is in an ecosystem.
What is biodiversity?
The percent of the world covered by water.
What is 75%/71%
All living and nonliving things in a particular area.
What is an ecosystem?
If the amount added or removed is not equal the system will _____.
What is change?
The best way to wipe out a species is to______.
What is remove it from its natural environment?
True or False: Healthy ecosystems are not useful to humans
What is false?
The honeybee population is ___________.
What is decreasing?
When something stays mostly the same over time.
What is stability?
If there are more births than deaths in a given time, then the size of the population will _____.
What is increase?
____ of all the species in the world live in the ocean.
What is 2/3?
________ are ecosystems that exist in some areas where land and water meet.
What are wetlands?
One sign of a healthy ecosystem is its ______________.
What is biodiversity?
Anything with parts that interact to make a whole.
What is a system?
If there are fewer births than deaths, then the size of the population will ______.
What is decrease?
Recycle, leave nature in nature, plant/garden, stay on trail during hikes, don't put harmful chemicals into storm drains.
What are things you can do to increase biodiversity?
Healthy ecosystems can _____ water for humans.
What is filter?
Any animal that is tiny and drifts through the water is considered _________.
What is zooplankton?