Identifying characteristics of bacteria include
1.) the presence and/or number of flagella
2.) gram staining
3.) shape and arrangement of cells
4.) all of the above

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

Which structure in the cardiovascular system connect arteries to veins?

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.