If cO2 concentrations in the air have increased over the last decade dramatically, then what concentration in the air has increased dramatically over the last decade? Answer choices: - zinc - CO2 - h2o - CFCs - lungs - coal - O2 - CO 2
CO2

(Question)
If earthworms ingest sediment and extract food particles to help form and enrich soil, then what ingests sediment and extracts food particles? Answer choices: - animals - soil - humans - a fish - earthworms - barnacles - h2o - bacteria
(Answer)
earthworms

Ques: If hats prevent heat loss from the body after losing hair, then what prevent heat loss from the body after losing hair? Answer choices: - gloves - skin - shoes - hats - sweat - cocoa - Masks - fur
Ans: hats

(Q).
If overexposure to vibrating matter can damage hearing, then what can overexposure to vibrating matter cause? Answer choices: - symptoms - hypothyroidism - Pollution - hyperthyroidism - Damaged hearing - Electrical energy - Relieve pain - decrease stamina
(A).
Damaged hearing

Ques:If webbed feet are used for moving faster through water by ducks, then what uses webbed feet for moving faster through water? Answer choices: - squids - humans - h2o - trout - octopus - insects - ducks - fish

Ans:ducks

Question: If nests store food that is unused, then where would an animal store food for later? Answer choices: - river - Winter - trees - can - skull - nest - leaves - box
Answer:
nest