A pair of nitrogenous bases, consisting of a purine linked by hydrogen bonds to a pyrimidine that connects the complementary strands.
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The bases in DNA (adenine, thymine, cytosine, and guanine) form hydrogen bonds with each other. Adenine pairs with thymine, and cytosine pairs with guanine. This pairing creates a double helix structure, with the bases forming the "rungs" of the ladder and the sugar-phosphate backbone forming the "rails". This hydrogen bonding between the bases is responsible for the stability and shape of the DNA helix.
The cross-section of a prism is the same - it is the same as the shape of the two parallel "bases"; this cross-section can be any shape, not necessarily a rectangle. Each side of a prism is rectangular, so knowing the formula for a rectangle will help you along to finding the surface area of the prism by helping you to calculate the area of the sides; however, you will still need to be able to calculate the area of the bases (unless it is given to you), for which knowing the area of a rectangle may not (usually will not) help.
by drawing it hope this help
the answer is SUNLIGHT!!!the shape of triangle help that the needles get more sunlight and protect also with snow , so the tree wont hold much weight!
It might - just might - help if the "shape below" actually appeared below!
Please help me I have a science project due feb 14