Answer:
e. equal numbers of protons and neutrons in the nucleus orbited by varying numbers of electrons
Explanation:
Answer: double helix
Explanation: The double helix of DNA is, like its name implies, in the shape of a helix which is essentially a three dimensional spiral. The double comes from the fact that the helix is made of two long strands of DNA that are intertwined—sort of like a twisted ladder.
Benefits of living on land: Sunlight is brighter, since it doesn't have to go through water first. More carbon dioxide in the atmosphere than in the ocean. Mineral nutrients are plentiful in the soil.
Short hair-like projections, many bacteria and unicellular eukaryotes make use of cilia for locomotion. Humans also make use of cilia - they are found in the respiratory system and are used to carry mucus.
