If rivers cut deeper and wider to form canyons, then rivers cut deeper and wider to form what? Answer choices: - canyons - arteries - Roads - timberlands - old growth forests - soils - Sediment - coral reefs
canyons

If if soil is permeable then a compound of hydrogen and oxygen easily flows through that soil, then if soil is permeable then what easily flows through the soil? Answer choices: - bacteria and algae - A compound of hydrogen and oxygen - solid, liquid, gas - marshes and swamps - the wearing away of rock - basic building blocks of life - plankton and nonliving organic - To another location like underground
A compound of hydrogen and oxygen

Q: If length is measured in inches, then what is length measured in? Answer choices: - Square Feet - Liters - feet - Inches - arteries - Seconds - streams. - rivers
A: Inches

Question: If organisms on the ocean floor are unique, then what are organisms on the ocean floor? Answer choices: - conventional - common - unique - protected - parasites - tortoises - normal - bacteria
Answer: unique

*Question*
If hummingbirds co-evolved with plants, then what co-evolved with plants? Answer choices: - gravity - peachleaf willow - Chemical energy - Organic compounds - hummingbirds - h2o - density - animals
**Answer**
hummingbirds

*Question*
If fire causes thermal expansion, then what causes thermal expansion? Answer choices: - fear - cold - coal - energy - Sun - fire - ice - wind
**Answer**
fire