Fact 1: Cold fronts cause thunderstorms as they pass by. Fact 2: If cold air is advancing on warm air, the front is called a cold front. Given the two facts above, answer the question "Where do thunderstorms come from?" with the following options: - Too much rain in the clouds - When the environment is too cold - Earth's axis of rotation is tilted - fissures of hot, acidic water - More than one trophic level. - it flows to a lower level - Dryness in the environment - When cold air advances on warm air
When cold air advances on warm air

Fact 1: Viruses infect and live inside the cells of living organisms. Fact 2: An infection is an illness caused by the invasion of a virus or microorganism. Given the two facts above, answer the question "Microorganisms cause what inside of the cells of living organisms?" with the following options: - heat - harm them - health - worms - illness - resistance - Allergies - antibodies
illness

Q: Fact 1: Radioactive dating is used to determine the age of fossils. Fact 2: Radioactive isotopes are commonly used for dating . Given the two facts above, answer the question "what is used to determine the age of fossils?" with the following options: - Conifers - Sediment - calcite - skull - loose soil - cracking - exoskeleton - isotopes
A: isotopes

Question: Fact 1: Some light bulbs convert electricity into light and heat energy. Fact 2: Heat energy is the amount of energy in a substance. Given the two facts above, answer the question "some light bulbs convert electricity into light and the amount of what?" with the following options: - energy in a substance - hydrogen and oxygen - It decreases - matter vibrating - Inches or fractions of inches. - reducing acid rain - harmful substances - Males and females
Answer: energy in a substance

*Question*
Fact 1: An automobile engine transforms chemical energy into mechanical energy. Fact 2: Mechanical Energy- Mechanical energy is the energy of moving objects. Given the two facts above, answer the question "Automobile engines transform chemical energy into what sort of energy for objects?" with the following options: - life - guns - engines - moving - solar - vehicles - water - Cars
**Answer**
moving

*Question*
Fact 1: Amutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring. Fact 2: An adaptive trait helps an organism survive in a particular environment. Given the two facts above, answer the question "What can a mutation in the sex cells of a parent do to the offspring?" with the following options: - population movement - genetic diversity - duplicate itself - Change colors - Plants growth - hyperthyroidism - Help it survive - kill them
**Answer**
Help it survive