Igneous rock is formed from the cooling and crystallization of magma or partially melted rock. Igneous rock can be either intrusive or extrusive. Intrusive igneous rock has larger crystals, and extrusive igneous rock has small crystals. Sometimes the small crystals are not even visible. What determines whether igneous rock is intrusive or extrusive? A. where the rock was formed B. the density of the rock C. the chemical composition of the rock D. where crystals in the rock are found

Adoctor is trying to diagnose a patient with dry skin. which of the following resources would be the most ? a magazine ad about soft skin a growth chart online articles about dry skin medical books

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

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.