If canyon changes are tracked with pins, then how do we track canyon changes? Answer choices: - LEDs - wind - forces - river - slow - Pins - Raft - three
Pins

If halogen bulbs convert electricity into heat, then how do halogen bulbs make heat? Answer choices: - Air - energy - kinetic energy - Water - Sunlight - Evaporation - simple - Electricty
Electricty

Q: If coal is used to produce energy by burning in coal-fire power stations, then what does burning coal in coal-fired power plants produce? Answer choices: - Decibels - Fireplaces. - engines - organisms - Aloe plants. - Banana plants. - Energy. - warmth
A: Energy.

Question: If the phylum Platyhelminthes is bilaterally symmetric, then what is true about the phylum Platyhelminthes? Answer choices: - a hemisphere is tilted away from the sun - biological diversity - they have bilateral symmetry - characteristics - Something with a head, thorax, and abdomen - sub-units of species - aerobic capacity - The number of individuals
Answer: they have bilateral symmetry

*Question*
If hearing is used for sensing sound by cats, then what uses hearing to sense sound? Answer choices: - humans - Whales - cats - dogs - bears - vibrations - plants - planets
**Answer**
cats

Q: If humans add heat energy to their food, then what do humans add to their food? Answer choices: - nutrients - Proteins - Greenhouse gases - pain - gasoline - Heat energy - Energy. - coal
A: Heat energy