Why do scientists think Earth's core contains iron?

A. Iron cannot generate a magnetic field.

B. The moon has a similar core.

C. The crust is made mostly of nickel.

D. Samples of Earth's crust contain less iron than meteorites.

Why is oil considered a nonrenewable resource? A. It takes an extremely long time to form. B. It creates pollution when burned. C. It is used to produce electricity. D. It is found deep in the ground.

23. Which is NOT true of the silica tetrahedron? a. the atoms of the tetrahedron are strongly bonded together b. It occurs in many non-silicate minerals c.

Warning triangles flares a vehicles hazard lights or emergency vehicles ahead are clues that you might be approaching what / 11574569/5980088d? utm_source=registration

Why do you think some people argue the world needs a "second Green Revolution"?

Which statement describes the relationship between the Torah and the Old Testament? A. The Torah is the Jewish holy book. The Old Testament is a Christian holy book. They are different texts. B. The Old Testament is a Muslim holy book.

Trees in deciduous forest do what? A. Shed leaves during one season B. Grow in a warm Mediterranean climate C. Have needlelike leaves D. Grow in a climate that is cold year round

How many miles long is the great wall of china

What landforms are created at convergent boundaries?

In which direction does the Sun appear to move across the sky? Ofrom west to east from east to west from north to south from south to north

What is a planetary nebula neither a planet nor a nebula?