Biofuels - which are produced using agricultural crops like corn offer an alternative fuel source for combustion engines ( like the ones found in cars and trucks) which of the following is a cost associated with switching to biofuels? A. agricultural crops can lead to a decrease in the ability of those crowds for food
B. using agricultural crops can lead to an increased revenue for local farmers
C .biofuels can reduce the carbon dioxide released into the atmosphere.
D. biofuels can lead to a decrease in the occurrence of oil spilled the water ways​

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing

How many copies of genes do gametes have?