CHDA FINAL EXAM TEST AND PRACTICE EXAM QUESTIONS 2025
NEWEST EXAM COMPLETE EXAM QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS) /ALREADY GRADED A+
Fossils such as _____provide evidence of past life and environmental conditions. -
ANSWER footprints and shells
What is the importance of studying fossils? - ANSWER To provide information
about how life and environmental conditions may have changed.
Fossils provide evidence of------ - ANSWER how life and environmental conditions
have changed over time
In what era did the first land plants appear? - ANSWER Paleozoic
Finding a fossil sample that also contained seashells would indicate that the living
organism had died near_____ - ANSWER an ocean
Scientists can estimate the ages of rock if they contain certain - ANSWER index
fossils
Scientists have found large groups of fossils of marine organisms on
mountaintops. What does this tell scientists about the past? - ANSWER That these
rocks were once below the surface of an ocean
As the body plan of the fish progressed, the first sharks appeared during the
Silurian Period. The skeletons of these ancient fish are hard to find in fossil form
because their skeletons are composed of - ANSWER Cartilage
_________ explains that the topmost rock is the youngest. - ANSWER
Superposition
, Scientists sometimes find trace fossils that are not the organism itself, but
something left behind by an organism. Coprolites are trace fossils. They are
preserved feces, or dung, from animals. What part of an organism's life can this
tell scientists about? - ANSWER Diet
Some scientists believe that life on Earth began about 3.5 billion years ago. What
do they base this belief on? - ANSWER The fossil record.
Scientists have found that the elephant shrew and the elephant share more DNA
sequences than does the elephant shrew with a rodent. This evidence for
evolution suggests to scientists that the elephant shrew and elephant... - ANSWER
may share a common ancestor.
According to the current fossil record, scientists believe that life on Earth began
about how long ago? - ANSWER 3.5 billion years ago
Scientists frequently use all of the following to support the theory that organisms
change over time. - ANSWER Similarities in DNA, Similarities in early development,
similarities in body structure
Agnathan's living relatives are thought to be the ___________ and -
________________ - ANSWER lamprey and hagfish
When scientists analyze fossil record, they find organisms that are similar to some
organisms of today with noticeable changes. How does this help scientists to
interpret the past? - ANSWER It allows them to see how organisms have changed
over time.
Over millions of years , animals have evolved in shape and size. The nautiloid is
one of those animals. Which is a descendant of the nautiloid found during the
Cambrian period? - ANSWER nautilus
How can fossils tell us about Earth's past? - ANSWER Fossils give clues about
NEWEST EXAM COMPLETE EXAM QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS) /ALREADY GRADED A+
Fossils such as _____provide evidence of past life and environmental conditions. -
ANSWER footprints and shells
What is the importance of studying fossils? - ANSWER To provide information
about how life and environmental conditions may have changed.
Fossils provide evidence of------ - ANSWER how life and environmental conditions
have changed over time
In what era did the first land plants appear? - ANSWER Paleozoic
Finding a fossil sample that also contained seashells would indicate that the living
organism had died near_____ - ANSWER an ocean
Scientists can estimate the ages of rock if they contain certain - ANSWER index
fossils
Scientists have found large groups of fossils of marine organisms on
mountaintops. What does this tell scientists about the past? - ANSWER That these
rocks were once below the surface of an ocean
As the body plan of the fish progressed, the first sharks appeared during the
Silurian Period. The skeletons of these ancient fish are hard to find in fossil form
because their skeletons are composed of - ANSWER Cartilage
_________ explains that the topmost rock is the youngest. - ANSWER
Superposition
, Scientists sometimes find trace fossils that are not the organism itself, but
something left behind by an organism. Coprolites are trace fossils. They are
preserved feces, or dung, from animals. What part of an organism's life can this
tell scientists about? - ANSWER Diet
Some scientists believe that life on Earth began about 3.5 billion years ago. What
do they base this belief on? - ANSWER The fossil record.
Scientists have found that the elephant shrew and the elephant share more DNA
sequences than does the elephant shrew with a rodent. This evidence for
evolution suggests to scientists that the elephant shrew and elephant... - ANSWER
may share a common ancestor.
According to the current fossil record, scientists believe that life on Earth began
about how long ago? - ANSWER 3.5 billion years ago
Scientists frequently use all of the following to support the theory that organisms
change over time. - ANSWER Similarities in DNA, Similarities in early development,
similarities in body structure
Agnathan's living relatives are thought to be the ___________ and -
________________ - ANSWER lamprey and hagfish
When scientists analyze fossil record, they find organisms that are similar to some
organisms of today with noticeable changes. How does this help scientists to
interpret the past? - ANSWER It allows them to see how organisms have changed
over time.
Over millions of years , animals have evolved in shape and size. The nautiloid is
one of those animals. Which is a descendant of the nautiloid found during the
Cambrian period? - ANSWER nautilus
How can fossils tell us about Earth's past? - ANSWER Fossils give clues about
