The answer is B It must be testable.
Hello,
The answer is for sure <span>A. O horizon</span>.Positive.
Hope this helps
While scientists have made enormous discoveries, there is always more to learn. Knowledge is built on and reviewed. Sometimes new information reveals an error in understanding from the past. The study of how the world works is always ongoing.
The hollow impression of a trilobite is an original remains fossil.
In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.
