A scientist is studying the reproduction of four organisms and records information about each organism in a table. For which organism does the scientist need to collect more information to determine if it reproduces sexually or asexually?

1. W
2. X
3. Y
4. Z

Average annual precipitation and are the two major features that define the biomes on earth.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.