Explanation:
Small substances constantly pass through plasma membranes. Active transport maintains concentrations of ions and other substances needed by living cells in the face of these passive movements. Much of a cell's supply of metabolic energy may be spent maintaining these processes.
<h3><u>Answer;</u></h3>
a nebular cloud of dust and gas
All of the celestial bodies of the solar system were said to have formed <u>from a nebular cloud of dust and gas.</u>
<h3><u>Explanation</u>;</h3>
- The solar system is composed of the sun and all the planets and other bodies that travel around it. A planet is a celestial body that orbits the sun.
- <em><u>According to solar nebula theory, a solar nebula is where the sun and planets were formed from. Solar nebula is a rotating cloud of gas and dust.</u></em>
- The sun is composed of about 99 percent of all the matter that was contained in the solar nebula. During formation of the solar system, the sun was forming in the center of the solar nebula, while planets were forming in the outer regions.
Answer:
Our solar system consists of our star (the sun) and the gravitationally bound objects that orbit it.
Explanation:
The International Astronomical Union (IAU) defines the solar system as the gravitationally bound system consisting of our sun and the objects that orbit it. Most consider these "objects" to be the planets, but they are only the biggest objects to orbit the sun. There are also dwarf planets, and smaller system bodies that are apart of our solar system.
Answer:
We need psychology to understand how the brain works. Could this help you?
The answer is choice C 50%