Answer the following question given this paragraph: Earth and Moon orbit each other. This Earth-Moon system orbits the Sun in a regular path ( Figure below ). Gravity is the force of attraction between all objects. Gravity keeps the Earth and Moon in their orbits. Earth's gravity pulls the Moon toward Earth's center. Without gravity, the Moon would continue moving in a straight line off into space. Q: What keeps the earth orbiting the sun? Choices: - strong nuclear force - magnetic force - weak nuclear force - gravity A:
gravity
(Question)
Answer the following question given this paragraph: A catalyst works by providing a lower energy pathway from reactants to products. The use of a catalyst involves intermediate reactions which have lower activation complexes than the original reaction. On a simplified reaction energy diagram, this can be thought of as lowering the activation energy for a given transformation. If the activation energy of a reaction is decreased, more collisions will have enough energy to overcome this lower barrier, so the reactant-to-product transformation will occur more frequently. As a result, the overall reaction rate will be higher than for an identical reaction with a larger activation energy barrier. Q: What works by providing a lower energy pathway from reactants to products? Choices: - thermodynamics - hormones - magnetism - catalyst A:
(Answer)
catalyst
Ques: Answer the following question given this paragraph: Earth is a round, three-dimensional ball. In a small area, Earth looks flat, so it is not hard to make accurate maps of a small place. When mapmakers want to map the round Earth on flat paper, they use projections. What happens if you try to flatten out the skin of a peeled orange? Or if you try to gift wrap a soccer ball? To flatten out, the orange peel must rip, and its shape must become distorted. To wrap a round object with flat paper requires lots of extra cuts and folds. A projection is a way to represent Earth's curved surface on flat paper ( Figure below ). Q: What method is used to map the earth on flat paper? Choices: - calculations - forecasts - surveying - projections A:
Ans: projections
(Q).
Answer the following question given this paragraph: Q: The volume of blood each ventricle pumps per minute is called what? Choices: - trauma output - blood output - brain output - cardiac output A:
(A).
cardiac output
Ques:Answer the following question given this paragraph: All of the populations that live in the same area make up a community . The community that includes the goldfish population also includes the populations of other fish, coral and other organisms. Q: The populations that live in the same area form this? Choices: - a colony - a habitat - a biome - a community A:

Ans:a community
Ques: Answer the following question given this paragraph: Groundwater dissolves minerals and rocks into ions. Groundwater deposits those ions into different types of structures. Limestone caves are the best place to see these structures. Water erodes the cave and it has deposits structures like stalactites and stalagmites. The cave pictured here is Carlsbad Caverns in New Mexico. Q: Groundwater dissolves minerals and rocks into what? Choices: - gravel - sand - grit - ions A:
Ans:
ions