Question: Choose your answer.

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?

OPTIONS:
- development of new antibiotics
- development of new herbicides
- development of disease-resistant crops
- development of insect-resistant crops
My Answer: development of new herbicides

Question: Choose your answer.

When an atom loses or gains an electron, it changes

OPTIONS:
- atomic mass.
- atomic number.
- charge.
- element.
My Answer: charge.

Question: Choose your answer.

Which of the following correctly orders part of a fish's respiratory system from the least complex to most complex?

OPTIONS:
- cells -> gills -> tissues
- cells -> tissues -> gills
- gills -> tissues -> cells
- tissues -> gills -> cells
My Answer: cells -> tissues -> gills

Question: Choose your answer.

Which type of energy in gasoline is transformed into mechanical energy in a motorcycle engine?

OPTIONS:
- chemical
- nuclear
- magnetic
- electrical
My Answer:
chemical