Plasma is formed by electrons separating from atoms in stars, and color can be seen in some bright astronomical objects, such as stars, and bright planetary nebulae. Given these facts, electrons separating from what in certain bright astronomical objects forms plasma among the following options: - flames - iron - Energy. - atoms - matter - energy - quarks - rocks
atoms

Most modern gymnosperms are trees with woody trunks, and conifers are examples of gymnosperms. Given these facts, what is a tree with a woody trunk among the following options: - conifer - orchids - plants - trees - less water - vines - lycophytes - ferns
conifer

Q: An automobile engine transforms chemical energy into mechanical energy, and engines convert some energy of it to move the pistons (to work). Given these facts, what is moved by mechanical energy in an automobile among the following options: - vehicles - brake pad - humans - animals - people - gas pedal - pistons - seatbelt
A: pistons

Question: Decomposition increases amount of organic matter in soil, and organic matter is the plant and animal residue in the soil at various stages of decomposition. Given these facts, what increases the amount of plant and animal residue in soil among the following options: - Decomposition - Warm temperatures - fossil fuels - Pesticides - nutrients - evaporation - Wet weather - Living creatures
Answer: Decomposition

*Question*
Creating paper requires cutting down trees, and to cut down a tree is like destroying a life. Given these facts, creating paper may cause among the following options: - Physical weathering - Something to move - destroying life - It expands - Greenhouse gases - contamination - Pollution - harmful substances
**Answer**
destroying life

Some light bulbs convert electricity into light and heat energy, and light Bulbs Incandescent bulbs are available at the front desks. Given these facts, incandescents convert electricity into light and what among the following options: - energy - house - renewable energy - home - heat energy - motion - kinetic energy - heating liquids
heat energy