7. Which level includes all ecosystems on Earth? A. Biosphere B. Population C. Community D. Organism 8. A group of the same species living in one area is a: A. Community B. Population C. Habitat D. Biosphere 9. Metals are usually: A. Poor conductors of heat B. Brittle C. Good conductors of electricity
Answer (1)
Here is a detailed explanation for each of the questions:
Which level includes all ecosystems on Earth?
Answer: A. Biosphere
The biosphere is the broadest level of ecological organization. It encompasses all ecosystems on Earth, including oceans, forests, deserts, and more. The biosphere includes all life forms and their interactions with the environment, from the smallest microorganisms to the largest mammals. It's a global sum of all ecosystems and is vital for sustaining life on our planet.
A group of the same species living in one area is a:
Answer: B. Population
A population consists of individuals of the same species living in a specific area at a certain time. Populations are an essential concept in biology because they form the basis for studying ecological relationships. By observing populations, scientists can learn about species interactions, survival strategies, and changes over time.
Metals are usually:
Answer: C. Good conductors of electricity
Metals are excellent conductors of electricity, which means they allow electric charge to flow through them easily. This property is due to the presence of free electrons in the metallic structure, which can move freely and conduct electric current efficiently. This is why metals like copper and aluminum are commonly used in electrical wiring and circuits.
