You are presented with the question "what does an electric circuit need to work properly" and the following answer choices: - complete - a path - a piston - radio waves - engines - multiple paths - energy - heat Now knowing that when an electrical circuit is working properly , electrical current runs through that circuit and an electric circuit is the path of an electric current, choose the best answer.
a path
(Question)
You are presented with the question "What do earthworms ingest in order to form and enrich soil?" and the following answer choices: - segmented - vegetation - sediment - bacteria - Chlorophyll - sandworm - crawling - dirt Now knowing that earthworms are important deposit feeders that help form and enrich soil and deposit feeders ingest sediment and then extract the food, choose the best answer.
(Answer)
sediment
Ques: You are presented with the question "What has a negative impact on how plants feed themselves?" and the following answer choices: - darkness - disease - influenza - sunshine - viruses - Pollution - water - light Now knowing that darkness has a negative impact on photosynthesis and plants feed themselves through the process called photosynthesis, choose the best answer.
Ans: darkness
(Q).
You are presented with the question "What are the lithified remains of plants used for?" and the following answer choices: - heat production - generating heat by burning - harvesting crops - damming rivers - food and shelter - heat is produced - A transportation fuel - planting seeds Now knowing that coal is used for generating heat by burning and coal and lignite are the lithified remains of plants, choose the best answer.
(A).
generating heat by burning
Ques:You are presented with the question "What causes ice to expand as it is formed?" and the following answer choices: - precipitation - water - Physical weathering - sunlight - music - Condensation - heat produced - hydrogen bonds Now knowing that hydrogen bonds cause water to expand when it freezes and ice is frozen water, choose the best answer.

Ans:hydrogen bonds
Ques: You are presented with the question "What removes harmful substances from water before drinking?" and the following answer choices: - Calcium carbonate - evaporation - circulatory systems - sugar - chlorine bleach - one celled organisms - glass - cyanide Now knowing that treating water is used to remove harmful substances before drinking and chlorine bleach is ideal for treating water, choose the best answer.
Ans:
chlorine bleach