Answer:
The answer is C. The cell took in another ancient prokaryotic cell, which began living inside it.
Explanation:
- The Endosymbiont Theory explains the evolution of membrane bound organelles such as mitochondria and chloroplasts.
- According to the theory, mitochondria evolved when an ameoba like organism engulfed bacteria capable of cellular respiration.
- Similarly, chloroplasts were developed when the ameoba like organism engulfed cyanobacteria or blue-green algae capable of photosynthesis.
- These organisms survived inside the ameoba over millions of years to develop into mitochondria and chloroplasts.
- The fact that mitochondria and chloroplasts have their own circular DNA and ribosomes is evidence of the endosymbiont theory.
Answer:
Government programs aim to increase incentives for consumers and producers to move toward energy efficiency. Energy efficient products are marked with a label designating them as such under the Energy Star program. This helps consumers make informed decisions when buying products that consume energy. The Alliance to Save Energy is a coalition of businesses that work together to effect policy changes that will improve energy efficiency.
Explanation:
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<span>The answer to this is because there are many different kinds of problems that science can address, and the "scientific method" that's taught in every high school science class isn't appropriate for every type of investigation. Scientists custom-build the procedure they will use depending on the unique challenges of the problem they are trying to solve.
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