Derek has a bird that weighs 4 pounds . use the double line diagram below to you determine below to you determine approximately how many kilograms this bird weighs. a. 1.5 kilo b. 2 kilo c. 5 kilo d. 7 kilo

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.