Fact 1: Plants are multicellular eukaryotes with cell walls made of cellulose. Fact 2: Plant cell walls are composed primarily of lignin and cellulose. Given the two facts above, answer the question "Plants are multicellular eukaryotes with cell walls composed primarily of what?" with the following options: - protein - plants - leaves - chemicals - Energy. - lignin - eukaryotes - Energy
lignin

Fact 1: Carbon may be stored in sedimentary rock for millions of years. Fact 2: Forests are a natural store of carbon. Given the two facts above, answer the question "Forests naturally keep what?" with the following options: - ants - fish - carbon - ferns - firs - rainfall - heat - protected
carbon

Q: Fact 1: Cells are the basic units of the structure and function of living things. Fact 2: Biology is the science of living things. Given the two facts above, answer the question "What is the study of things with cells?" with the following options: - etomology - properties - cell towers - disease - animals - archaelogy - biology - fungi
A: biology

Question: Fact 1: Playing is just one of many ways that mammals and other animals learn how to behave. Fact 2: Animals behave in a variety of ways which enhance their chances of survival and reproduction. Given the two facts above, answer the question "Why do animals learn to behave?" with the following options: - exercise - survival - anger - no reason - environment - emotion - ligt - allow growth
Answer: survival

*Question*
Fact 1: Mollusks are invertebrates such as the common snail. Fact 2: An invertebrate is an animal that has no spine, or backbone. Given the two facts above, answer the question "What has no backbone?" with the following options: - chimp - snail - bats - insects - monkey - sharks - coward - salmon
**Answer**
snail

*Question*
Fact 1: Plants exhibit phototropism, or growing toward a light source. Fact 2: Roots are negatively phototropic. Given the two facts above, answer the question "what grow away from a light source?" with the following options: - stems - roots - buds - fungus - cacti - flowers - fens - salmon
**Answer**
roots