Answer: Layer a is 500 million years old.
Explanation:
Trilobite is a member of the group of extinct arthropods found as fossils and they can be identified by the three-lobed as well as three segmented forms. These were the marine animals. These were appeared initially in the Cambrian Period. They used to live 542 million years ago so the fossils can be estimated to be aged of 500 above years old. These animals used to dominate in the sea area.
Answer:
People who acquire advantageous features have a greater chance of surviving, whereas individuals who have less useful traits are weeded out by natural selection. The higher the diversity of characteristics in a population, the greater the population's chances of survival.
Answer:
B. deciduous forest
Explanation:
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Cammie:)
Answer:
False.
Explanation:
Protons are positively charged, so having more protons would make an atom positively charged. Electrons are negatively charged.
Answer:
A
Explanation:
As the species seperated they formed a differnt beak based on what they ate.
