Q: Answer the question

Which object used in an experiment can safely be recycled?

A: an aluminum can

Q: Answer the question

After nitrogen becomes part of the lithosphere, what is the next change that nitrogen will undergo?

A: fixed by bacteria in the soil

Q: Answer the question

Monarch butterflies use milkweed plants during all of their life stages. Milkweed plants grow in open areas, such as grasslands and wetlands. They also often grow between row crops. Given this information, which of these biotechnologies would pose the greatest threat to monarch butterflies?

A:
development of new herbicides