All infectious agents cause sicknesses. Viruses, bacteria, and fungi are the different groups of infectious agents.
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The 2 types of glaciers are continental glaciers and alpine glaciers
Continental glaciers are Continental glaciers are continuous masses of ice that are much larger than alpine glaciers. Small continental glaciers are called ice fields. Big continental glaciers are called ice sheets.
Alpine glaciers are a glacier formed among summits and descending a mountain valley.
Tulips can survive in water and in soil
The DNA double helix is held together by two types of bonds, covalent and hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing. These hydrogen bonds are individually weak but collectively quite strong.