Ecosystems 6th grade

Which action would increase the amount of oxygen in a fish tank?

• adding more fish

• adding more plants

• placing food in the tank

• placing a water heater in the tank

Tags

NGSS.MS-LS1-6

How would a drought most likely affect the plants of a grassy plain?

• There would be shorter plants.

• They would have thicker stems.

• There would be a greater variety.

• They would have brighter flowers.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS1-5

In which way are rainforests and coral reefs different from ecosystems with few species?

• There are more prey than predators.

• The food web is more stable and lasting.

• Organisms often must compete for food.

• Plant populations are the primary producers.

Tags

NGSS.MS-LS2-5

What directtion is the movement of the energy in a food web?

• Consumer to producer

• producer to consumer

• decomposer to producer

• decomposer to consumber

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Sea turtles rely on moonlight and starlight to help them find their way to their egg-laying sites on the beach. Many beach resorts have streetlights and bright parking lights that shine directly on the beach. What is the most likely effect of these lights on the turtles?

• The lights could cause the sea turtles not to lay eggs.

• The lights could make the sea turtles lose their sense of direction.

• The lights could make it easier for predators to see the sea turtles.

• The lights could change the time of the year the sea turles lay their eggs.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-5

NGSS.MS-ESS3-4

WHICH BIOME BEST DESCRIBES THE AREA REPRESENTED BY THE GRAPHS SHOWN?

• DESERT

• TUNDRA

• GRASSLAND

• FOREST

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NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Changing ocean temperatures have led to a large decrease in the number of horseshoe crabs. Which effect will most likely occur next?

• The diamonback turtle and grackle populatons will decrease.

• The striped bass and plankton populations will decrease.

• The razor clam population will increase.

• The sanderling population wil increase.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

When can producers make the most food?

• summer, because there is more sunlight

• summer, because there is more heat

• spring, because there is more rain

• spring, because there are more leaves

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which of the following should replace the question mark in the table?

• mice living in a meadow

• plants living in a meadow

• animals livng in a meadow

• animals and plants living in a meadow

Tags

NGSS.MS-LS2-1

Scientists think that if populations of American alligators decrease, populations of rats and other small animals might increase. The relationship between rats and alligators can best be described in which way?

• The alligators eat the rats as food.

• The rats eat young alligators as food.

• The rats eat food that alligators leave behind.

• The alligators and the rats eat the same kind of food.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4