What does the presence of these coral fossils suggest about the location of North America 370 million years ago?
These fossils indicate that North America must have had a much warmer (i.e a tropical environment 370 million years ago)
Corals are marine animals whose skeletons are easily fossilized and thus have an extensive fossil record. There are many fossils of extinct corals in North America. For example, Lophophyllum is a North American extinct genus of corals dated at 320 million to 290 million years ago (i.e., from the Late Carboniferous period). In general, corals live in warm seawater, and thereby their fossil records can be used as indicators of environmental conditions.
The coral fossils' presence suggests that North America was located near the equator 370 million years ago, within the subtropical climate zones where corals thrive the most.
These seasonal changes in density create growth rings, similar to those found on trees. Scientists can use these rings and other features to determine the climatic conditions during the growing season of the coral.
By comparing the soil and plant and animal evidence at a site, scientists can get a general idea of what the environment was like in the past. By comparing living plant and animal evidence to these ancient remains, scientists can get an idea of what the environments were like.
To learn more about the subtropical climate, refer to the link:
he __________ system works with the nervous system to protect important organs such as the brain and spinal cord. A) skeletal B) lymphatic C) endocrine D) cardiovascular
The skeletal system since the brain is apart of the skeletal system.
The correct answer would be skeleton
I had the same question
White sands national monument is a large area made of white sand dunes. What is likely to be true of this area
White sands national monument is a large area made of white sand dunes therefore what is most likely to be true of this area is that it has a high albedo (Apex).
What is a Sand dune?
This is referred to as any accumulation of sand grains shaped into a mound or ridge by the wind under the influence of gravity.
In this scenario, the type of sand is called white sand and it is characterized by the presence of a high albedo which is because light-coloured surfaces return a large part of the sunrays back to the atmosphere thereby making it the correct choice.
Brainstorm and create a list of 4 human activities that interfere with ecosystems, food chains and food webs. For each explain how it happens, why we do it, and mention short and long term effects
The humans are the dominant consumers. They influence food chains and food web through agriculture, production of energy, habitat destruction, pollution, hunting, and overfishing. This is generally done in order to fulfill the demands for food and shelter along with the growth of population. In long term, it influences aquatic and soil ecosystems.
In case if due to human activities if one community of animals gets extinct then there will be a chain reaction of animals getting extinct. The animals live in harmony to thrive and without which it will proliferate into more extinct animals. Ultimately the majority of the animals will no longer be alive.
here are some things that interfer with the ecosystem (highways, driving cars, fossil fuel, cities, farms, deforestation, over hunting, over fishing and plastics)
Explain what happens to the bands A,I,H when aconraction occurs in the muscles.
The functional unit of a muscle cell is known as a "sarcomere" which covers the distance between the two Z-lines.
The sarcomere consists of A-zone which contains both thick and thin filaments, H-zone which contains only thick filaments and I band which contains only thin filaments.
During muscle contraction, thick and thin myofibrils slide over each other due to which the distance between two z-line get reduced.The H and I zone gets shortened but A zone does not shorten but come close to other A- bands and disappears.
How can life continue in the earth’s biosphere without an inflow of additional carbon atoms?
The biosphere will sustain when the inflow of additional carbon atoms is low due to ecosystem services.
The ecosystem services refers to the deteritous activity done by the microbes present in the soil which convert the soil organic matter into available carbon dioxide to the environment.
Hence, the biosphere will receive the flow of carbon atoms by the activity of deteritous.
The oxygen and carbon dioxide in the lower layers of the troposphere (that touches Earth) allow life to exist as organisms can respire and plants can photosynthesise. The atmosphere also helps to keep the Earth warm by trapping solar energy.