What is the most significant difference in current weather forecasting methods compared to what was done in the past? A. more accurate computer-based weather models

B. improved weather instruments

C. better TV and radio weather communications

D. more weather stations reporting data

Abnormal softening of a gland is known as

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.

All ova contain sex chromosomes corresponding to: x y xx xy