1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valentinak56 [21]
3 years ago
9

How did scientists begin to Mark divisions in the geologic time scale in response to a change they discovered in the geologic re

cord
Biology
1 answer:
masha68 [24]3 years ago
3 0

Answer:

Scientists began to mark division on the geologic time scale when patterns and similarities started emerging from archeological studies. Patterns such as the discovery of fossils that were formed within the same period.

Explanation:

Geologists who study matter that make up the Earth's crust (whether solid gaseous or liquid), as well as matter from other terrestrial planets and the processes that influence the formation and condition of this matter, are called geologists.

They have successfully calibrated history into various phases of time intervals. These intervals are event-based intervals. For example, you have Eons, Eras, and Periods.

An Eon is a billion years. An example is the Neoproterozoid Eon. Eons are made up of several Eras and Eras are made up of periods. An example of an era is the Mesozoic era. Whilst periods are smaller units of an era, eg. Triassic era.

As scientists deduced the causes for the formation of fossils and topographical remains/patterns, they collected events that occurred within the same time period and group them together.

This range of events became known as the geological time scale.

The age of fossils and rocks is also used to map out the calibrations on the scale.

The age of fossils and rocks is determined using the process of radioactive dating.

Cheers

You might be interested in
Why does the human body maintain a constant pH of its blood
IRISSAK [1]
Because if there is a minimal variation of it the normal state of pH, it can cause severe effects in the brain, arteries, the heart, and other organs. 
In other words, it can have some serious effects on the body systems that can lead big diseases, like cancer. 
6 0
3 years ago
Which organelles do both plant and animal cells have in common?
My name is Ann [436]

Answer:

nucleus, cytoplasm, mitochondria

Explanation:

5 0
2 years ago
Read 2 more answers
Explain why people sleep under mosquito nets in some parts of the world​
Virty [35]

Answer:

A mosquito net is a type of meshed curtain that is circumferentially draped over a bed or a sleeping area, to offer the sleeper barrier protection against bites and stings from mosquitos, flies, and other pest insects, and thus against the diseases they may carry

3 0
3 years ago
Read 2 more answers
What would happen to an ecosystem if an invasive
MrRa [10]

Explanation:

the top predator is removed from the delicate balance of any particular ecosystem, there may be disastrous effects for the other plants and animals that inhabit the environment.

When a top predator is removed from an ecosystem, a series knock-on effects are felt throughout all the levels in a food web, as each level is regulated by the one above it. This is known as a trophic cascade. The results of these trophic cascades can lead to an ecosystem being completely transformed. The impacts trickle down through each level, upsetting the ecological balance by altering numbers of different animal species, until the effects are finally felt by the vegetation

When a top predator is no longer present, populations of their herbivorous prey begin to boom. Without a top predator to regulate their numbers, these animals put a great deal of pressure on the existing vegetation that they require for food and can destroy large amounts of plant life, such as grasses and trees. This then causes further problems, such as soil erosion and loss of animal habitat. Eventually, humans are also impacted due to the resulting lack of soil fertility and clean water that depend on these plants.

Another problem involving the loss of vegetation is the competition that is created between herbivorous species. Competition between species for the remaining plant life is high and weaker species lose out to stronger ones, leading to the potential loss of weaker animals, as well as plant species. Increased competition, therefore, leads to a lack of biodiversity. In contrast, top predators often have varied diets, which means they can pursue a new food source if one is running low, preventing the first source from being eradicated completely. This is one of the ways that top predators are able to maintain biodiversity and the balance of an ecosystem.

The presence of a top predator also helps to maintain balance in an ecosystem by influencing the behaviour and movements of its prey through the fear of being caught. Animals that are prey to a top predator will move around in order to avoid it. This prevents plants and animals in any particular area of an ecosystem from being over-consumed, preserving food sources and habitats. In the absence of top predators, this regulation disappears, allowing certain areas of vegetation to be destroyed completely.

6 0
3 years ago
Read 2 more answers
Do you think humans go through a simple life cycle? Explain your reasoning.
shtirl [24]

Answer:

Yes, we are born, reproduce, then die. Everything has that life cycle

Explanation:

5 0
2 years ago
Other questions:
  • What is the role of electron carrier molecules in energy processing systems? why are they necessary?
    8·1 answer
  • What sentence best supports the statement that hormones are involved in the regulation of homeostasis?
    11·2 answers
  • How could disease-causing bacteria get inside a cell without damaging the cell membrane?
    12·1 answer
  • Comparative morphology _____. A) compares the embryo development of organisms of different species B) compares the anatomy of or
    7·2 answers
  • Predict a potential outcome of a mutated MAD protein
    5·2 answers
  • Five use for your element or its common compounds
    7·2 answers
  • The __________ are formed in red bone marrow and then migrate to tissues throughout the body. these blood cells destroy parasiti
    10·1 answer
  • place the following categories in order from most specufic to least specific. A) bryophyte B) seedless plant C) eukaryote D) mos
    5·1 answer
  • What does adding salt do to gatorade
    13·2 answers
  • URGENTUGSHAJIHUJNAHZBJNHBJNAKJZAK!!!!!!!!!!!!!! HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!