How are a parallelogram and a trapezoid different?

Used primarily for thickening sauces and soups, a (paste/roux/stock) is made from a (1: 2/2: 1/1: 1) fat and flour.

Victoria enjoys laughing with her friends as they walk around the track after school which best describes her heart rate during this activity

Avirus consisting of a single strand of rna, which is transcribed into complementary dna, is a ) proteaseb) retrovirusc) rna replicase virusd) nonenveloped virus