From your knowledge of biological evolution, what characteristic of organisms older than 540 million years ago makes fossils of these life forms relatively rare?

The fossils that are more than 540 million years old are hard to get on earth due to their low preservation potentials because of the following conditions-

1) Lack of hard parts in the organisms does not lead to the formation of fossils. These organisms were soft-bodied.

2) Due to the occurrence of different mass extinction in geological time, the fossils might have destroyed.

3) Due to the constant plate tectonic activities that take place on earth, these fossils were damaged.

4) The fossils existing in a particular area also gets affected if there occurs intrusion of magma, that burns the fossils. The more ancient fossils are difficult to obtain because of the various geological processes that undergo on earth. So, the fossils of recent ages are mostly found on the beds of sedimentary rocks.

5) Some fossils are also not found because they are buried deep under the earth's surface.

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.