The heart is a muscle, which must constantly absorb molecules from the blood to produce ATP and continue contracting. a. True
b. False

Iguanas need to live in a habitat that is very warm, so the pet store warms their enclosures with "basking lights" which act as an artificial sun. describe how the three methods of thermal energy transfer may take place within the iguana's enclosure.

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii

2pomis which of the following would be a valid hypothesis for a scientific investigation about how transportation affects food security? alcannotatiord foods purchased from the local farmers market. o b. how does the distance a food travels affect its affordability? o e foods that travel great distances cost less than foods bought o d why do local farmers markets have food with such high prices?