Which of the following is not considered a region of the spinal cord? The d. pelvic region is not considered a region of the spinal cord. Which cells form myelin in the spinal cord? Schwann cells make myelin in the peripheral nervous system (PNS: nerves) and oligodendrocytes in the central nervous system (CNS: brain and […]
What are the three main types of telescopes?
What are the three main types of telescopes? Types of Telescope. There are three main types of telescope. These are refracting telescopes, Newtonian telescopes and Schmidt-Cassegrain telescopes. Why do we use different types of telescope? Most objects give off several frequencies of energy simultaneously. Your body, for instance, glows in thermal infrared down to radio. […]
What is the basic unit of all matter on earth?
What is the basic unit of all matter on earth? Atoms are the basic units of matter and the defining structure of elements. The term “atom” comes from the Greek word for indivisible, because it was once thought that atoms were the smallest things in the universe and could not be divided. What is the […]
What was Democritus wrong about?
What was Democritus wrong about? 2,500 years ago, Democritus suggested that all matter in the universe was made up of tiny, indivisible, solid objects he called “atomos.” However, other Greek philosophers disliked Democritus’ “atomos” theory because they felt it was illogical. Atoms cannot be subdivided, created, or destroyed. Are we made of atoms? About 99 […]
What does the UN logo stand for?
What is the most common geological feature seen on moons?
What is the most common geological feature seen on moons? Craters are the most common surface features on many solid planets and moons—Mercury and our Moon are covered with craters. This portion of the Moon is covered by numerous circular holes. These are impact craters, each of which was formed when an asteroid or comet […]
What forces are responsible for the movement of ocean water in currents What forces and factors influence the direction and nature of ocean currents?
What forces are responsible for the movement of ocean water in currents What forces and factors influence the direction and nature of ocean currents? Primary forces are thermal expansion and contraction of water, the stress of wind blowing over the water, and density differences between water layers. Secondary forces and factors are the Coriolis Effect, […]
What is the most likely reason that a hypothesis would be useful even?
What is the most likely reason that a hypothesis would be useful even? What is the most likely reason that a hypothesis would be useful even if experiments show that it is false? New hypotheses and experiments can be developed that better fit the observations made during the original experiments. Why is it smart to […]
What is an example of non?
What two types of digestion occur in mouth?
What two types of digestion occur in mouth? Mechanical and Chemical Digestion There are two kinds of digestion: mechanical and chemical. Mechanical digestion involves physically breaking the food into smaller pieces. Mechanical digestion begins in the mouth as the food is chewed. What does the stomach do in the digestive system? Stomach. The stomach is […]