The photo shows the seeds of one dandelion. The seeds are very light and can travel on the wind far away from the dandelion plant. Which three factors might keep some of the dandelion seeds from becoming plants that produce their own seeds?
A. Lack of adequate soil and water.
B. Animals that eat plants.
C. The distance a seed travels.
D. Other plants that block sunlight.

Describe speciation of the galapagos island finches in terms of geographic isolation

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.