What can be concluded from this image of a spiral galaxy?
a) the arms have many young stars and the central region has older stars.
b) the galaxy is being pulled apart into an irregular galaxy by gravity.
c) the stars in the central region have the highest temperatures.
d) there is not much of star-forming activity in the galaxy.

Chinese privet is a plant that is native to china. over 150 years ago, chinese privet was introduced to the united states as a fast-growing shrub that serves as an excellent privacy hedge. with no natural herbivore, chinese privet quickly established itself and spread in natural areas throughout the southeast and eastern seaboard of the united states. its dominance in these areas has jeopardized the survival of native plant species. chinese privet provides evidence that introducing non-native organisms can cause environmental damage integrated pest management strategies will not decrease chinese privet populations american gardeners can easily control the spread of chinese privet non-native plant species have type i survivorship curves

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii

Which of the following describes what an activator an enhancer are