All categories

2 years ago

According to the fossil record, which statement

2 answers:

6 0

<span>(1) Most of the species that have lived on Earth no longer exist.</span>
Scientists actually believe that 99.9% of all species to have lived on this planet are now extinct.

jolli1 [7]2 years ago

4 0

Answer:

(1) Most of the species that have lived on Earth no longer exist.

Explanation:

Fossil describes the remnant or trace of animals or plants in a geologic age that is preserved in the Earth's crust. It can be studied to give a fossil record, which is an evidence of past existence of a plant or an animal.

Fossil record is the history of life of an organisms documented by fossil that has been preserved in rocks. It helps paleontologists, archaeologists, and geologists to make accurate predictions about events and species.

Scientists believe that almost 99.9% of species of different organisms that have lived on Earth are now extinct. Therefore according to fossil record, most of the species that have lived on Earth no longer exist.

You might be interested in

Write a paragraph on how Blood Glucose goes with Negative Feedback

vagabundo [1.1K]

Answer:

Here are some explanations from 0nline so if you want rewrite in your own words

hope this helps :))

blood glucose-

"The control of blood sugar (glucose) by insulin is a good example of a negative feedback mechanism. When blood sugar rises, receptors in the body sense a change. In turn, the control center (pancreas) secretes insulin into the blood effectively lowering blood sugar levels."

"If the blood glucose level is too low, the pancreas releases the hormone glucagon. This travels to the liver in the blood and causes the break-down of glycogen into glucose. The glucose enters the blood stream and glucose levels increase back to normal. This is an example of negative feedback."

body temperature-

" Body temperature is regulated by negative feedback. The stimulus is when the body temperature exceeds 37 degrees Celsius, the sensors are the nerve cells with endings in the skin and brain, the control is the temperature regulatory center in the brain, and the effector is the sweat glands throughout the body."

"Body temperature is controlled by the hypothalamus in the brain. If the hypothalamus detects that the body is too hot, the response is that the body begins to sweat to try and reduce the temperature back to the correct level."

"Negative feedback (or balancing feedback) occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances."

"Negative feedback brings a system back to its level of normal functioning. Adjustments of blood pressure, metabolism, and body temperature are all negative feedback"

7 0

2 years ago

if 10 calories of energy are added to 2 grams of ice at negative 30 C calculate the final temperature of the ice

elena55 [62]

Hello.

M*Cp*(T’-Tf)=MCp(T'-T)

M*= Mass of Water. ; M= Mass of ice.

Cp*= Specific heat of water

Cp= Specific heat of ice

T= Temp. Of Ice

T'= Temp. of water

Tf= Equilibrium Temp.

Have a nice day

8 0

2 years ago

Which one the following is the most stable?

il63 [147K]

Answer:

plz tell which is your following

8 0

2 years ago

Which kind of organism is a heterotroph? photosynthesizers producers consumers plants

ohaa [14]

Consumers because they cant make their own food

6 0

2 years ago

What is the only thing that can scratch corondum?

tatuchka [14]

Answer:

The only thing that can scratch Corundum is diamond.

Explanation:

We refer to the Mohs Hardness Scale for the hardness levels. We can see that Corundum is a level 9 which is the second highest so at a level 10 we see diamond, therefore diamond is the only thing that can scratch Corundum.

6 0

3 years ago