Which of these is an abiotic element of a desert ecosystem? A. sand
B. cactus
C. lizard
D. scorpion

Asample of soil from a c horizon is light brown in color and has a high content of a mineral called feldspar. which of the following statements is most likely true

Which step is the same in both forms of fermentation, as well as in cellular respiration?

2.) insulin is needed to your cells take in sugar from your blood. after you eat a candy bar, will your insulin gene be expressed or repressed? 3.) all cells have the same dna, and they all make the same proteins. true or false? the answers are 2.) expressed3.) false