Answer:
1. The earth orbit is slightly elliptical, and the earth axis is tilted by roughly 23.5° to the orbit. These to factors combine to make the an analemma. But in the winter, When the Earth is on the other side of orbit, the Earth's north pole is tipped away from the Sun, so at noon the sun doesn't get as high.
2. The earth's spin axis is tilted with respect to it's orbital planet. This is what causes the season. When the earth's axis points towards the sun. it is summer for that hemispheres. Midway between these two times in spring and autumn, the spin axis of earth points 90 degrees away from the Sun.
<span> If the concentration of blood is 0.5 M, and red blood cells that are bathed in blood neither shrink nor swell and burst, the concentration of cytoplasm of RBCs is A. 0.5m. An isotonic solution refers to two solutions that have the same water concentration on both sides of a membrane. So, cells in isotonic solution have the same water concentration as the isotonic solution and thus they will neither shrink nor swell and burst. If the concentration of blood is 0.5 M, the concentration of RBC cytoplasm must be the same (0.5 M).</span>
Answer:
A carbon atom can form up to four covalent bonds as one carbon atom has four valence electrons (in outermost shell). It is a fact that the number of valence electrons in a atom determines the number of covalent bonds it will form. Thus, each electron in carbon atom is used to form four covalent bonds with various four atoms.
Explanation:
A bond between a carbon and hydrogen atom is a non-polar covalent bond. The non-polar covalent bond are the bonds between two atoms which share equal number of electron(s) with each other. Example: as in case of methane, where one carbon atom shares its 4 outer valence electrons with four hydrogens by sharing equal number of electron.
In contrast, polar covalant bond are the bonds between two atoms which share unequal number of electron(s) with each other. Thus these bonds are partially ionic.
It has one less electrons then protons
Francesco Redi was the first scientist to disprove and challenge the spontaneous generation theory. He experimented on how flies distributed their eggs on the meat which caused flies to arose. Thank you for your question. Please don't hesitate to ask in Brainly your queries.
