Fact 1: Ablack hole is formed by a high-mass star collapses. Fact 2: Collapsed stars are dead stars. Given the two facts above, answer the question "what high-mass object forms black holes?" with the following options: - layers of fat - an object - dead stars - moons - graptolites - shooting stars - milky way - It expands
dead stars

(Question)
Fact 1: Hitting an object causes the particles in that object to vibrate. Fact 2: Rock particles vibrate back and forth. Given the two facts above, answer the question "Hitting a rock causes what?" with the following options: - heat energy - erosion - energy - friction - flooding - squeeze - contamination - vibration
(Answer)
vibration

Ques: Fact 1: Active immunity results when an immune response to a pathogen produces memory cells. Fact 2: Memory cells persist in the circulation for decades. Given the two facts above, answer the question "what can persist in the circulation for decades?" with the following options: - active immunity - density - Veins and arteries. - oxygen cells - bacteria - chlorofluorocarbons - fur and fat - Chemical energy
Ans: active immunity

(Q).
Fact 1: Melting means changing from a solid into a liquid by adding heat energy. Fact 2: Ice is the solid form of water. Given the two facts above, answer the question "What changes ice to water by adding heat energy?" with the following options: - mussels - melting - freezing - fertilization - storms - boiling - engines - condensation
(A).
melting

Ques:Fact 1: Changes in the pH of soil can cause plants to die. Fact 2: Animals and humans eat plants for their nutrients. Given the two facts above, answer the question "What can changes in soil pH do?" with the following options: - Damages them - It decreases - death and devastation - Increase human wealth - Rob humans of nutrients - Cause humans happiness - Destroy crops - Give humans pleasure

Ans:Rob humans of nutrients

Ques:Fact 1: Some parasites kill their host, but most do not. Fact 2: Some of the more common parasites are various types of 'worms'. Given the two facts above, answer the question "What do some worms do to their hosts?" with the following options: - Copy them - reproduce - Play with them - harm them - Show them things - Kill them - migrate - Damages them

Ans:
Kill them