Combined. These characteristics provide humans with a large amount of fossil evidence for trilobites. Fossil Record of Trilobites in Texas
60m
Dega Blow the Earth's surface
70m
Which statement below best describes the cause of the arrangement of smooth and spikey trilobite fossils observed in the fossil record above?
The smooth trilobites were able to dig deeper into the soil than the spikey trilobites because they did not have protruding spikes that
would catch on rocks in the ocean floor.
Smooth trilobites could no longer blend in with the soil and grew spikes as an adaptation to protect themselves from predators
gradually over time.
The smooth trilobites were not able to compete with the spikey trilobites for food and slowly became extinct as the spikey trilobites
O
became more dominant in the environment.
O
A change in the environment caused the smooth trilobites to no longer be well adapted for the conditions. Spikey trilobites were well
adapted to the new environment and begin to thrive.

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.

Wikipedia aswell can be used to solve the following questions

The name of the instrument that the scientist uses is called a microscope.a microscope is used to view objects which is not visible to the naked eyes

Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of  amino acids  , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in  genes  . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called  transcription  ), and the mrna is transported to the  ribosome  . protein synthesis, also called  translation  , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the  nucleotides  of mrna three by three, in units called  codons  , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the  amino acid  chain goes on to be processed and folded to make the final, functional protein