"Igneous rocks are one type of rock. They are formed from liquid rock called magma. Magma exists far below Earth's surface. Magma sometimes escapes to the surface through cracks, such as mouths
of volcanoes. When magma reaches the surface, it's called lava."
Which detail would best support the main idea of the paragraph?
A. Igneous rock is created from magma.
B. Lava can reach temperatures above 200 degrees.
C. Volcanoes that are not active are called dormant.
D. Sedimentary rock is made from many particles.

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

The largest unit within which gene flow can readily occur is a

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars