Answer the following question given this paragraph: The aphotic zone is water deeper than 200 meters. This is where too little sunlight penetrates for photosynthesis to occur. As a result, food must be made by chemosynthesis or else drift down from the water above. Q: What is the minimum depth in the aphotic zone? Choices: - 150 meters - 450 meters - 10 meters - 200 meters A:
200 meters
Answer the following question given this paragraph: Egg production in the ovary is part of the menstrual cycle. The menstrual cycle is a series of changes in the reproductive system of mature females that repeats every month on average. These changes include the development of an egg and follicle in the ovary. Q: What is the name for a series of changes in the reproductive system of mature females that repeats every month on average? Choices: - periodic table - urinary cycle - puberty - menstrual cycle A:
menstrual cycle
Q: Answer the following question given this paragraph: Chemical weathering is different than mechanical weathering. The minerals in the rock change. The rock changes composition and becomes a different type of rock. Most minerals form at high pressure or high temperatures deep within Earth. But at Earth's surface, temperatures and pressures are much lower. Minerals that were stable deeper in the crust are not stable at the surface. That's why chemical weathering happens. Minerals that formed at higher temperature and pressure change into minerals that are stable at the surface. Chemical weathering is important. It starts the process of changing solid rock into soil. We need soil to grow food and create other materials we need. Chemical weathering works through chemical reactions that change the rock. Q: What type of weathering causes the minerals in a rock to change? Choices: - toxic - natural - artificial - chemical A:
A: chemical
Question: Answer the following question given this paragraph: Acidity is measured by pH, which is the concentration of hydrogen ions in a solution. Q: What is described by the concentration of hydrogen ions in a solution? Choices: - neutrality - hydrogeny - oxidation - ph A:
Answer: ph
*Question*
Answer the following question given this paragraph: The cell is the basic unit of structure and function of all organisms. The Cell Theory states that all living things are made of one or more cells, or the secretions of those cells, such as the organisms shown in Figure below . For example, shell and bone are built by cells from substances that they secrete into their surroundings. Cells come from cells that already exist, that is, they do not suddenly appear from nowhere. In organisms that are made of many cells (called multicellular organisms), every cell in the organism's body derives from the single cell that results from a fertilized egg. You will learn more about cells and the Cell Theory in Cells: The Cell Theory (Advanced) concept. Q: What is the basic unit of structure and function in all organisms? Choices: - the atom - the neutron - the electron - the cell A:
**Answer**
the cell
(Q).
Answer the following question given this paragraph: Momentum is a vector that points in the direction of the velocity vector. The magnitude of this vector is the product of mass and speed. Q: The magnitude of the momentum vector is the product of what two properties? Choices: - acceleration and speed - work and speed - volume and speed - mass and speed A:
(A).
mass and speed