Agasoline lawn mower converts gasoline into motion, and small engines, such as in lawn mowers, pollute at a high rate. Given these facts, converting gasoline into motion cause what among the following options: - Dehydration - elections - global debt - friction - dangerous - pollution - Firecrackers - traffic jams
pollution

Riding a bike does not cause pollution, and air pollution Air pollution is a major threat to health. Given these facts, riding a bike does not cause what among the following options: - Greenhouse gasses - forward motion - harmful substances - wear on tires - Greenhouse gases - major threat to health - contamination - sore bottom
major threat to health

Q: Along tail can be used to move through water by an animal, and water is made up of H2O molecules. Given these facts, what can animals use a long tail to move through among the following options: - beavers - rain - bogs - h2o - carbon - H20 - oxygen - Aves
A: h2o

Question: Bacteria cause food to spoil, and water can be tested for coliform and fecal coliform bacteria. Given these facts, what causes food to spoil among the following options: - contamination - influenza - coliforms - toxins - disease - Dehydration - Pollution - Pesticides
Answer: coliforms

*Question*
Cutting down trees has a negative impact on an ecosystem, and oak trees are so strong. Given these facts, what has a negative impact on an ecosystem among the following options: - massive damage - Pesticides - good weather - Destroy bridges - planting trees - normal water levels - deforestation - cutting down oaks
**Answer**
cutting down oaks

Q: Macroevolution is evolution over geologic time above the level of the species, and speciation events are thus examples of macroevolution. Given these facts, evolution over what time above the level of the species includes speciation events among the following options: - movement - ligt - environment - radiation - geologic - relocation - Most plants - animals
A: geologic