Apopulation of domesticated sheep becomes stranded on a rocky island. over many years, the physical traits of the sheep population are altered. their wool became thicker and darker , their hooves became deeper and sturdier, and their ears became smaller and rounder. these changes are an example of which process?

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.

Which of the following terms would bb represent in an organism? a.phenotype b.genotype c.genetics