*Question*
If coliforms cause food to spoil, then what causes food to spoil? Answer choices: - contamination - influenza - coliforms - toxins - disease - Dehydration - Pollution - Pesticides
**Answer**
coliforms

*Question*
If when an animal moves , kinetic energy in starch is converted to mechanical energy, then when an animal moves , kinetic energy in starch is converted to? Answer choices: - adding heat - Temperature - organic molecules - Organic compounds - mechanical waves - cellulose - hydrogen and oxygen - mechanical energy
**Answer**
mechanical energy

*Question*
If sharks have a skeleton made of tough tissue that contains a protein called collagen, then what has skeleton made of tough tissue that contains a protein called collagen? Answer choices: - mammals - rocks - animals - sharks - a fish - cows - humans - plants
**Answer**
sharks

*Question*
If cross-pollination increases evolution, then cross-pollination increases? Answer choices: - flowers - Reproduction - seeds - gene flow - growth - evolution - pollen - traits
**Answer**
evolution