When ponds freeze, they freeze at the surface first before freezing at the bottom. Which property of water explains why this might happen?
Choose 1 answer

A
High specific heat

B
Density

C
Adhesion

D
High boiling point

The series of transgressions and regressions that produce cyclothems were likely produced by

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.