Afire requires oxygen to burn, and smoke from fires contains heat and the products of burning. Given these facts, smoke is a product of what being burned among the following options: - an object - oxygen - engines - trees - Oak - energy - Cooking - Cars
oxygen

(Question)
Vesicle transport requires energy, so it is also a form of active transport, and active transport is another form of diffusion. Given these facts, what requires energy among the following options: - diffusion - empty space - Plants growth - nothing - salamanders - animals - passive transport - Cooking
(Answer)
diffusion

Ques: Fat is used to keep animals warm, and humans are a new type of animal. Given these facts, what uses fat to keep warm among the following options: - Lobsters - bacon - humans - pigeons - insects - omnivores - plants - bears
Ans: humans

(Q).
If something is outside during the day then that something will receive sunlight, and another source of vitamin D is sunlight. Given these facts, what is a health benefit you receive for being outside among the following options: - Relieve pain - staying warm - exercise - inactive - vitamin D - air cools - layers of fat - sweating
(A).
vitamin D

Ques:Infection can cause bodily tissues to swell, and an aneurysm is a swelling in a blood vessel. Given these facts, what can cause an aneurysm among the following options: - smoking - infection - bacteria - viruses - Pollution - steroids - influenza - rays or beams

Ans:infection

Amphibians have a relatively complex circulatory system with a three-chambered heart, and toads and frogs are both amphibians. Given these facts, what has a three chambered heart among the following options: - alpacas - goats - elms - bats - orchids - mammals - a fish - toads
toads