What occurred while the lunar surface was melted by radioactive heat?

A) lava flows formed maria.

B) earth and a planetesimal collided.

C) the moon became geologically inactive.

D) bombardment by meteoroids formed the highlands.

In a building, a system is installed that uses the geothermal energy in summer to cool the building and the same energy to warm the building in winter. Which is this system?

The structure and function of mitochondria are often used as support for the endosymbiotic theory. Describe two of these properties and explain how they support the theory

Which phrase best defines a biome? areas with different population types and plant communities areas with distinct animal and plant communities and associated with particular climates areas with distinct animal communities and associated with

Animal like protists are called

Satellites can be used for many purposes. Which of these statements describes how satellites can be used for navigation? A.) Satellites can be used to relay information to opposite sides of Earth. B.

The ___ ventricle pumps blood to the pulmonary circuit, while the ___ ventricle pumps blood into the systemic circuit.

In what ways are mosses liverworts in the hornworts words similar

Carbon-14 has a half life of 5,770 years. A fossil was found that had 1/32 of its original Carbon-14 remaining. How old is the fossil?

Why are many trials taken and averaged in an experiment?

Northern flickers are woodpeckers of the eastern United States. Males, but not females, have black feathers that resemble a moustache extending from the bill along each side of the head.