You are presented with the question "How do we track canyon changes?" and the following answer choices: - LEDs - wind - forces - river - slow - Pins - Raft - three Now knowing that most canyons are formed by flowing rivers through erosion over long periods of time and erosion was monitored by means of erosion pins, choose the best answer.
Pins
You are presented with the question "How do halogen bulbs make heat?" and the following answer choices: - Air - energy - kinetic energy - Water - Sunlight - Evaporation - simple - Electricty Now knowing that some light bulbs convert electricity into light and heat energy and halogen light bulbs generate heat, choose the best answer.
Electricty
Q: You are presented with the question "What does burning coal in coal-fired power plants produce?" and the following answer choices: - Decibels - Fireplaces. - engines - organisms - Aloe plants. - Banana plants. - Energy. - warmth Now knowing that coal is used to produce electricity by burning in coal-fire power stations and electricity is a form of energy, choose the best answer.
A: Energy.
Question: You are presented with the question "What is true about the phylum Platyhelminthes?" and the following 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 Now knowing that flatworms belong to the phylum Platyhelminthes and flatworms are bilaterally symmetric, choose the best answer.
Answer: they have bilateral symmetry
*Question*
You are presented with the question "what uses hearing to sense sound?" and the following answer choices: - humans - Whales - cats - dogs - bears - vibrations - plants - planets Now knowing that hearing is used for sensing sound by animals and all cats are animals, choose the best answer.
**Answer**
cats
Q: You are presented with the question "What do humans add to their food?" and the following answer choices: - nutrients - Proteins - Greenhouse gases - pain - gasoline - Heat energy - Energy. - coal Now knowing that cooking food requires adding heat energy and many of foods that humans eat are cooked, recooked, and then warmed up, choose the best answer.
A: Heat energy