food webs are models that show how energy flows in an ecosystem. What is the ultimate source of energy for all the organisms in the food web shown?

• consumer

• producer

• parasitism

• sun

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

which of the following statements below correctly defines the following statement: In a food relationship where the lion devours the giraffe, and the giraffe eats the plants​

• the lion is the prey and the giraffe is the predator

• the lion is the predator and the giraffe is the prey

• the lion is the secondary consumer and the giraffe is the primary consumer

• the lion is the primary consumer and the giraffe is the producer

Tags

NGSS.MS-LS2-3

if algae, bear, worms, and fish were arranged in an energy pyramid, which organism would have the least amount of total energy available?

• fish
• worms
• algae
• bear

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

a tree in the middle of a field loses most of its leaves in Fall. The leaves fall to the ground and eventually become part of the field's soil. What process will turn the leaves into soil?

• Condensation
• Photosynthesis
• Evaporation
• Decomposition

Tags

NGSS.MS-LS2-3

which of the following shows the organizational level of a biome from most complex category to most simplistic

• biome-community-ecosystem-population-organism

• biome-ecosystem-population-community-organism

• biome-ecosystem-community-population-organism

• biome-population-community-ecosystem-organism

which example shows a relationship between an abiotic and biotic factor in an ecosystem?

• an insect is food for a salmon

• water carries a rock downstream

• a tree removes carbon dioxide from the air

• a flower makes food for a butterfly

Tags

NGSS.MS-LS2-3

Which of the following best describes energy flow in an ecosystem?

• Energy flows in a linear path from producers to consumers

• Energy is recycled within an ecosystem, similar to matter

• Energy flows in a circular path, returning to the sun

• Energy flows in one direction, from the sun to producers and then to various levels of consumers

Tags

NGSS.MS-LS2-3

In the energy pyramid below, which organism has the least amount of energy available?

• Producers

• Herbivores

• Carnivores

• Top Predator

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What role do decomposers play in an ecosystem?

• They produce their own food through photosynthesis

• They consume living plants and animals

• They break down dead material and recycle nutrients back into the ecosystem

• They regulate the population of other species

Tags

NGSS.MS-LS2-3

The diagram below represents four trophic levels in an ecosystem. Which explanation best explains how energy passes through the trophic levels?

• Energy flows through all the trophic levels and then back to the producers.

• Most of the energy from the plants is transferred to the mice, grasshoppers, and rabbits because plants don't have to search for their food.

• About ten percent of the energy at one trophic level is passed to the next trophic level.

• Birds have the most energy because energy from all the other trophic levels flows to the birds.

Tags

NGSS.MS-LS2-3