Living plants may be valuable additions to science classrooms. Which is the most important safety consideration when planning to grow plants in a classroom? the light required for the plants to grow best the nutrients to feed the plants the composition of the soil in which to grow the plants the structure and chemical properties of the plants

Barbara is converting 78°f to degrees celsius. first, she subtracts 32 from 78. what is the next step?

Can you identify which of the following groups of organisms are, or are not, populations? a. the american bison (bison bison) and grey wolves (canis lupus) currently living in yellowstone national parkb. all of the rainbow trout (oncorhynchus mykiss that) that have ever lived in lake eriec. the group of american bison (bison bison) currently living in yellowstone national parkd. a group of calliope hummingbirds (selasphorus calliope) and a group of rufous hummingbirds (selasphorus rufus) living in the same new hampshire woodse. the northern cardinals (cardinalis cardinalis) living on opposite shores of lake champlain f. all of the whales currently living in the atlantic ocean off cape cod, massachusetts

How does natural selection change thephenotypes within a population over time?