You are presented with the question "Tsunamis are often cause by what in the earth's crust?" and the following answer choices: - waves - faulting. - flooding - pressure - friction - Movement - erosion - heat Now knowing that faulting of rock in Earth 's crust causes earthquakes and earthquakes can cause a tsunami, choose the best answer.
faulting.
(Question)
You are presented with the question "what does fire provide?" and the following answer choices: - warmth - fuel - light - water - ice - air - oxygen - cells Now knowing that fire converts chemical energy into light and heat energy and fire is a natural energy source which provides heat, light and energy, choose the best answer.
(Answer)
light
Ques: You are presented with the question "Something eaten by humans have varied what?" and the following answer choices: - story times - commutes - temperature - Plants growth - energy usage - life cycles - bedtimes - layers of fat Now knowing that algae have varied life cycles and some red algae are eaten by humans, choose the best answer.
Ans: life cycles
(Q).
You are presented with the question "What do rivers do to rocks?" and the following answer choices: - storing water - to move people - they bend - Make them get bigger - It has no effect on rocks - Polish them - Turn it to soil - protect them Now knowing that soil is formed by rocks eroding and rivers erode the rocks they flow over, choose the best answer.
(A).
Turn it to soil
Ques:You are presented with the question "what uses pheromones to communicate with each other?" and the following answer choices: - starfish - bees - bacteria - honeybees - density - humans - h2o - insects Now knowing that echinoderms use pheromones to communicate with each other and starfish and sea urchins are also echinoderms, choose the best answer.

Ans:starfish
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