The world contains a variety of environments, which are mainly created by
a.
natural disasters, like volcanic explosions.
b.
a wide diversity of physical conditions.
c.
similar species of plants and animals.
d.
natural selection and selective breeding.

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.

Which statement explains how gravity and intertia work together

Me. henley said, “in the rat race we call life, only the strong will survive.” he may have been referring to