Answer the following question given this paragraph: The deeper water of a lake makes up the profundal zone. There isn't enough light for photosynthesis in this zone, so most organisms here eat dead organisms that drift down from the water above. Organisms in the profundal zone may include clams, snails, and some species of fish. Q: What do most organisms eat in the profundal zone of a lake? Choices: - fresh organisms - algae organism - fish waste - dead organisms A:
dead organisms
Answer the following question given this paragraph: Mechanical waves are waves that transfer energy through matter, called the medium. Mechanical waves start when a source of energy causes a disturbance in the medium. Types of mechanical waves include transverse, longitudinal, and surface waves. Q: What type of waves start when a source of energy causes a disturbance in the medium? Choices: - fluid waves - mechanical currents - magnetic waves - mechanical waves A:
mechanical waves
Q: Answer the following question given this paragraph: The valence shell is the outermost occupied shell of electrons in an atom. This shell holds the valence electrons, which are the electrons that are involved in bonding and shown in a Lewis structure. Valence-shell electron pair repulsion theory , or VSEPR theory, states that a molecule will adjust its shape so that the valence electron pairs stay as far apart from each other as possible. This makes sense, based on the fact that negatively charged electrons repel one another. We will systematically classify molecules according to the number of bonding pairs of electrons and the number of nonbonding or lone pairs around the central atom. For the purposes of the VSEPR model, a double or triple bond is no different in terms of repulsion than a single bond. We will begin by examining molecules in which the central atom does not have any lone pairs. Q: What is the outermost occupied shell of electrons in an atom. Choices: - Inner Shell - radiative shell - modular shell - valence shell A:
A: valence shell
Question: Answer the following question given this paragraph: The hamstrings flex the leg, whereas the quadriceps femoris extend it. Q: The hamstrings flex the leg, whereas the quadriceps femoris have what effect? Choices: - contract - stabilize - no effect - extend A:
Answer: extend
*Question*
Answer the following question given this paragraph: Biodiversity is a measurement of the amount of variation of the species in a given area. More specifically, biodiversity can be defined as the variety of life and its processes, including the variety of living organisms, the genetic differences among them, and the communities and ecosystems in which they occur. Q: What is a measurement of the amount of variation of the species in a given area called? Choices: - ecosystem - population - degradation - biodiversity A:
**Answer**
biodiversity
(Q).
Answer the following question given this paragraph: Once a sand dune forms, it may slowly migrate over the land. The wind moves grains of sand up the gently sloping side of the dune. This is done by saltation. When the sand grains reach the top of the dune, they slip down the steeper side. The grains are pulled by gravity. The constant movement of sand up and over the dune causes the dune to move along the ground. It always moves in the same direction that the wind usually blows. Can you explain why?. Q: The migration of what familiar coastal landform involves saltation and gravity? Choices: - volcanos - lakes - rivers - sand dunes A:
(A).
sand dunes