Extinction

a. only happens above the species level
b. cannot happen to more than one species at a time
c. has happened to over 99% of species that ever lived on earth
d. happens when a species or population dies out

What are examples of the plant life and animal life that can be found in each type of terrarium

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

Can create a hboth of these instruments can measure wind speed. doppler radar and psychrometer anemometer and hygrometer doppler radar and anemometer radiosonde and psychrometer