The aquifer must be permeable and porous to allow the water to flow through.
Answer:
206
Explanation:
It is composed of around 270 bones at birth - this total decreases to around 206 bones by adulthood after some bones get fused together.
<h2>Answer:</h2>
Scientists can determine the order of when rocks formed on Earth.
<h2>
Explanation:</h2>
Radioactive dating is the technique in which scientists used radioactive material like carbon or uranium to date the materials. This method of dating is based on the known decay rate of the isotopes of an element. Uranium, Carbon, and potassium are few examples of elements commonly used in radioactive dating.
The correct answer is - the ocean animals deposited in its layers.
The sedimentary rock on the image is clearly an organic sedimentary rock because it contains fossils of marine animals. This type of sedimentary rocks form when sediments and organic matter come in contact, are merged, or rather naturally cemented so they are stuck together, and the end result is a sedimentary rock with organic matter involved in its composition. The organic sedimentary rocks are much more common in places where there was once a marine life, and much rarer with organic matter from terrestrial animals in it, though there are some rich deposits from that type in certain places as well.
I say neither because they seem to be the same bird but ill go with B anyway