Fact 1: An animal requires nutrients to grow and heal. Fact 2: Microbes provide nutrients to animals. Given the two facts above, answer the question "What can help an animal to grow and heal?" with the following options: - food - heat - bones - energy - cells - microbes - glycogen - proteins
microbes

Fact 1: Radioactive dating is used to determine the age of fossils. Fact 2: Extinct organisms represented only by fossils. Given the two facts above, answer the question "What is used to determine the age of extinct organisms?" with the following options: - viruses - an electron microscope - Echinoderm. - fossils of Panthera leo - genetic material - the Sun - tectonic plates coliding - radioactive dating
radioactive dating

Q: Fact 1: Muscle contraction occurs when muscle fibers get shorter. Fact 2: Contraction of the muscle straightens the leg. Given the two facts above, answer the question "What happens to your leg when muscle fibers shorten?" with the following options: - they bend - It decreases - It straightens - permineralization - It expands - Damages them - Localized damage - Dehydration
A: It straightens

Question: Fact 1: Alight bulb is used for seeing in the dark. Fact 2: Incandescent light bulbs use a tungsten filament sealed inside a glass bulb. Given the two facts above, answer the question "Tungsten filaments sealed in a glass bulb are used for what in the dark?" with the following options: - photons - energy - seeing - stay warm - sleeping - talking - communicating - heat
Answer: seeing

*Question*
Fact 1: Most invertebrates have a more complex nervous system. Fact 2: Invertebrates are animals without a backbone. Given the two facts above, answer the question "what have more complex nervous systems" with the following options: - animals without a backbone - the wearing away of rock - h2o - barks and snarls - plants - density - Veins and arteries. - remains of prehistoric life
**Answer**
animals without a backbone

*Question*
Fact 1: Phase changes do not change mass. Fact 2: Melting, freezing, condensation, and evaporation are examples of phase changes. Given the two facts above, answer the question "Melting matter does not change its " with the following options: - crust - metal - mass - O3 - heat - cycles - energy - liquid
**Answer**
mass