Name that Biome!
A place where a river flows into an ocean. Water is salty, but not as salty as the ocean.
Estuary
What diagram shows the amounts of energy that flow through each level of a food chain?
energy pyramid
In an ecosystem, birds depend on insects to survive. If someone spreads pesticide to control the insect population, what is most likely to happen as a result?
The bird population will decrease.
Animals get nitrogen by eating decomposers.
False
An organism that feeds off another organism and causes it harm.
parasite
Oaks, Elms, and Maple trees thrive in this biome.
How do carnivores obtain energy?
They eat animals.
Different kinds of plants living in the same area must compete for water. Which kind of plant has the greatest chance of survival? (think about their roots)
the plant with the largest root system
A decrease in rainfall in a rain forest might be a limiting factor for for animals and plants living there.
True
Name the four limiting factors and describe how limiting factors affect population.
Food, water, space, shelter. populations can only grow to a certain size and still have all of their needs met.
An area of warm, shallow water that doesn’t have many nutrients.
Coral Reef
The results of respiration are carbon dioxide and
water
Creatures that live in the deep ocean need to adapt to which environmental factors
High Pressure and the Darkness of the Deep Sea
Animals compete for resources, but plants do not compete.
False
Which adaptation best helps elk survive in the taiga biome?
thick fur
Found in the Midwest of America
Grassland/Prairie
What role do decomposers play in ecosystems?
They break down waste and dead matter.
Both organisms need each other to survive in which of the following examples?
1. a microorganism living in the stomach of a wolf
2. a fungus and bacteria forming a lichen
3. a parasitic worm living in a fox’s bloodstream
4. a squirrel scaring insects off a tree into the path of birds
2.a fungus and bacteria forming a lichen
Energy in an ecosystem does not disappear.
True
The group of all the populations in an area is called a ____________
community
This biome protects inland areas from ocean waves.
Salt Marsh
When decomposers break down the remains of dead organisms, what do they make that can be used by plants?
nitrogen compounds
Corals have a symbiotic relationship with plant-like algae that grow inside them. How do the algae benefit the corals?
The algae help the corals make a hard outside coating.
The most abundant gas in the atmosphere is nitrogen.
True
In Africa, Nile crocodiles can often be seen lying in the sun, their jaws held open. Small white egrets perch on the crocodiles’ backs or hop in and out of their mouths. The birds also peck at the crocodile’s teeth, feeding upon the scraps of food embedded there. Although crocodiles eat some birds, they do not eat the egrets. What is the term for the relationship between the crocodiles and the egrets? Explain this relationship.
mutualism - symbiosis. both animals benefit. Crocodiles get their teeth cleaned and egrets get a food supply (and protection from predators).