What does the net primary production refer to.

Which statement best explains why meiosis produces haploid cells rather than diploid cells? A) Haploid cells join to form an organism that has half the number of chromosomes as the parent.

3 Facts about genetic engineering

Black case is an enzyme that is involved in breaking down lactose the sugar in milk which term best describes the role of lactase in the digestion of milk

Transition metals are A. good conductors of thermal energy B. more reactive than alkali metals C. not good conductors of electric current D. used to make aluminum

A population of deer mice with light-colored coats lives in Sand Hills, Nebraska. The ground in Sand Hills is light colored where glaciers have deposited sand on top of dark soil.

Which of the following is an unsegmented acoelomate worm? a. flatworm b. annelid c. roundworm d. echinoderm

Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most similar to which of the following reproductive isolating mechanisms? A. mechanical isolation B.

From the time of my beginning, my part was made of fibrous material called collagen, which is secreted by

you are running an experiment trying to figure out how water affects plant growth for three orchid plants you recently bought. The orchids are the same species and you will place the plants next to eachother in the same windowsill.

The living world is organized in levels. Biotic and abiotic factors also can be arranged into levels of biological organization. Put the words below in order from the least complex to the most complex