Which statement explains one way that lakes form? A. Lava flows block a river. A. Lava flows block a river. B. Streams flow into shallow areas. C. Groundwater feeds into low-lying areas. D. Grassy wetlands get covered by a stream.

How would our lives be different if we had never realized the existence of microorganisms

With no herring to eat, how would the eating habits of cod change

How the polarity of Earth's magnetic field is recorded in the sea-floor

The DNA sense strand for a particular amino acid is 5′-ATG-3′. What RNA sequence would be transcribed for this codon, what tRNA anticodon would recognize it, and what amino acid would be added in response to this codon?

NutraSweet (aspartame) is not a carbohydrate but rather a modified dipeptide. What is the biochemical explanation for why this molecule is 500 times sweeter in human taste tests than the monosaccharide galactose?

The type of liquid is the

Why is the cell called the basic living unit of all living matter?

True or False All algae have roots, stems, and leaves.

How would a houseplant respond to sunlight that comes from one direction? A. by curling its stem around its leaves B. by closing its leaves at night C. by growing roots downward through the soil D. by bending its stem toward the sun

Hershey and chase used a dna-based virus for their work. How might the results have been different if they had used an rna virus?