Answer:
Carbon based rings & chains form very large molecules because carbon can form up to 4 covalent bonds to form these rings and chains, and these bond with other rings and chains over and over. ... Lipids, proteins, carbohydrates, and nucleic acids are the 4 main types of carbon-based molecules in organisms.
Explanation:
To breathe, they use the <span>the carbon dioxide. Carbon dioxide is the main element which help the organisms to breathe.</span>
<span>The answer is b. Angiosperms. Bryophytes are seedless plants. Gymnosperms and Angiosperms have seeds. The difference between these two groups is in the seed position. If seeds are inside ovaries, a plant belongs to Angiosperms. If seeds are outside ovaries, on the scales for example, a plant belongs to Gymnosperms. Since apple flowers produce seeds inside ovaries, it belongs to Angiosperms.</span>
Chromosomes consist of two sister chromatids in prophase ii.
Ionic bonds <span>are the type of bonds where there is </span>transfer<span> of electrons from one atom to another. The electrons are removed and from one atom and attached to another. A good example is salt which is composed of sodium and chlorine. Sodium readily loses one of its electrons and chlorine readily accepts it. Before losing the electron, sodium has a positive charge, but then becomes negatively charged after giving up the electron. Chlorine has a positive charge before gaining the electron but becomes negatively charged after gaining the electron. These opposite charges between sodium and chlorine attract the two elements together to form the ionic bond.</span>
