7th Grade Science Final Exam

Front

What are the biotic and abiotic factors in an ecosystem?

Back

Biotic factors: plants, animals, microorganisms; Abiotic factors: sunlight, water, temperature, soil, air.

Front

Different trophic levels in an ecosystem?

Back

Producers, Primary Consumers, Secondary Consumers, Tertiary Consumers, Decomposers

Front

What are consumers in ecology?

Back

Consumers are organisms that obtain energy by feeding on other organisms.

Front

What does a food web show?

Back

A food web shows the feeding relationships and energy flow among organisms in an ecosystem.

Front

What is an energy pyramid and how does energy flow through trophic levels?

Back

An energy pyramid shows energy flow through trophic levels, with producers at the base and decreasing energy availability for consumers.

Front

What is a symbiotic relationship?

Back

A symbiotic relationship is an interaction between two different species that can be beneficial for one or both.

Front

How do predators and prey affect populations?

Back

Predators regulate prey populations, and prey availability influences predator populations.

Front

How does climate influence biomes?

Back

Climate shapes biomes by affecting temperature and precipitation patterns, influencing the types of ecosystems that develop.

Front

What was Darwin's theory of evolution?

Back

Darwin's theory of evolution is natural selection and that organisms that are best adapted to their environments survive and reproduce.

Front

How can the age of fossils be determined?

Back

Fossils can be dated using radioactive or relative dating.