which characteristic is shared by intrusions and lavas?\no are cracks.\no are igneous rocks.\no cause gaps…

Brief Explanations:

Intrusive igneous rocks form when magma cools and solidifies below the Earth's surface. Extrusive igneous rocks form when lava cools and solidifies on the Earth's surface. Both are igneous rocks formed from magma/lava. Igneous rocks are formed from the cooling and solidification of molten material. Intrusive rocks are often coarser - grained as they cool slowly beneath the surface, while extrusive rocks cool quickly on the surface. But the common characteristic is that they are igneous rocks.

Answer:

Are igneous rocks.