What best describes why carbon is a useful building block. Carbon has 2 electrons in its outer shell and can form strong ionic bonds to build
solid structures
Carbon has 4 electrons in its outer shell and can form covalent bonds to build a
variety of structures
Carbon has 8 electrons in its outer shell and is a very stable atom

Dr. bad has developed a way to damage the atp-binding cassette transporter (abc transporter) on a cell. the cell's abc transporter can no longer bind and use atp when it's transporting substances. which of the following statements best describes how this damage would effect the transport of substances in the affected cell? (choice a) substances at a low concentration outside the cell would be more rapidly transported into the cell, where there is a high concentration. (choice b) substances at a high concentration outside the cell would not be transported into the cell, where there is a low concentration. (choice c) equilibrium would be established between all substances inside and outside of the cell. (choice d) substances at a low concentration outside the cell would not be transported into the cell, where there is a high concentration.

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

The science for classifying and naming organisms is known as