What is an animal that doesn’t have a backbone called?
The name of the Super continentthat existed on Earth around 250 million years ago was called
Scientists study fossil records to learn more about
Where oil can be found
How the Earth was created
How species have changed over time
When the next ice age will occur
The process through which a species disappears from Earth is called
Scientists believe that the Earth formed about
400 million years ago
4.6 billion years ago
460, 000 years ago
4 million years ago
Fossils are usually not formed from the soft tissue of an organism because
The soft tissue is too hard.
The soft tissue is too slippery.
The soft tissue usually decays.
The soft tissue is muscle.
What is the major cause of thetides in Earth’s oceans?
Gravitational pull of the Sun and Moon
Revolution of the Earth around the Sun
Spinning of the earth on its axis
Gravitational pull of Venus
Many mountains are sharp and jagged, but the Appalachian Mountains are rounded.Which forces acted on the AppalachianMts. to give them their rounded shape?
A regionthat drains into a river or river system is called a watershed. What determines the boundaries of a watershed?
climate and weather patterns
gravity and the features of the land
water and carbon cycles
life cycles of plants and animals
10.A geologist found rock layers containing marine fossils on top of a mountain. When she dug down into the next layer of rock, she found fossils of freshwater clams. Based on the placement of the fossils, which conclusion is best?a.The area was once covered by a salt marsh and was later covered by a freshwater lake.b.The area was once covered with a freshwater lake and was later covered by a salt marsh.c.The area was once covered by an inland ocean and was then covered by a glacier.d.The area was once covered by a massive inland saltwater sea.