What are four .sources of fresh water on Earth? . A. Ice, groundwater, lakes and water vapor
B. Water vapor, ice, lakes and oceans
C. Groundwater, water vapor, rivers, and oceans
D. Lakes, water vapor, oceans and rivers

Q: a pair of homologous chromosomesa) always has the same genes and the same allows b)always has the same genes c)always has the same alleles d)never has the same genes

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Which of the following describes the difference in stimuli required to detect a difference between the stimuli? a. just noticeableb. signal detectionc. subliminald. top down