Answer:
There are five levels: cells, tissue, organs, organ systems, and organisms.
Explanation:
I believe this is what you're looking for. Hope it helps.
Answer:
Promoter 2
Explanation:
Promoter 2 is the best choice because the resistance gene will only be expressed in the leaves of the corn plant. Promoter 3 only expresses genes in the corn roots, so the toxin would not be available in the leaves for the pest to eat. Promoters 1 and 4 would express the resistance gene in the leaves of the corn plant, but the toxins would be expressed in the corn cobs as well, which may then be fed to livestock.
The answer is B. The specific heat means the heat amount the substance needs to absorb when the temperature increases 1℃. The high specific heat means that it needs a huge amount of heat when increase just 1℃. For A, the dissolved salts can help decrease the freezing point.
1) The central nervous system (CNS) consists of the brain and the spinal cord, which are enclosed in the skull and vertebral column, respectively
2) The peripheral nervous system (PNS) consists of all the neural tissue outside of the brain and spinal cord
