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
guajiro [1.7K]
3 years ago
12

Scientist believe that the first life form appeared over how many years ago

Biology
1 answer:
mylen [45]3 years ago
5 0
3.7 Billion years ago.
You might be interested in
HELP ASAP!!!
Amiraneli [1.4K]

Answer:

The four main classes of organic compounds (carbohydrates, lipids, proteins, and nucleic acids) that are essential to the proper functioning of all living things are known as polymers or macromolecules. All of these compounds are built primarily of carbon, hydrogen, and oxygen but in different ratios.

Explanation:

6 0
3 years ago
An extreme disturbance happens in an ecosystem. How does an ecosystem change as succession happens after this disturbance?
ddd [48]

Answer:

There is less biodiversity in the ecosystem.

Explanation:

Since the barren ground doesn't provide suitable living conditions for most of the living organisms, the ones that need the lest resources to survive create the primary succession, usually the mosses and lichens. The organisms of the primary succession provide biomass, so the ground is mixing with it, thus new soil is forming.

5 0
3 years ago
Read 2 more answers
Rajesh designed an experiment to test the effect of fertilizer on plant growth. The table on the right shows the data he collect
Hoochie [10]

Answer:

the answer will be

measure the growth of plant that did not recieve fertilizer

perform additional trials

Explanation:

i just took the test and got the answer right

5 0
3 years ago
Read 2 more answers
Studying the differences between fossils and modern organisms, like the camel, helps scientists better understand the
Marat540 [252]
It shows evolution and growth from the past and present
5 0
3 years ago
tWhich organs are part of the excretory system? a)stomach, esophagus b)kidney, bladder c)large intestine, small intestine d)gizz
Ronch [10]

Answer/Explanation:

b) kidney and bladder

Kidneys are the main organ in the excretory system and the bladder stores the urine in the body. These are two of the organs that make up the excretory system.  

4 0
3 years ago
Other questions:
  • When comparing height/weight tables, BMI, and body composition, which is most accurate for determining ideal weight?
    13·1 answer
  • The lungs, nose, and trachea are organs of the respiratory system. Which best describes these organs? A) They deliver nutrients
    11·3 answers
  • The protoplasm and cytoplasm of a plant are interchangeable terms. True False
    13·1 answer
  • Which abo blood type is considered to be the universal donor?
    13·1 answer
  • Darby has a very high-energy dog named Lily Lily's parents were both very energetic dogs Darby trains Lily to chase a tennis bal
    13·1 answer
  • An allergic reaction to certain cosmetics or chemicals that cosmetologists may be susceptible to is called:
    14·1 answer
  • During swallowing, which structures prevent food from entering the nasopharynx and trachea?
    14·1 answer
  • Can someone please do this
    14·1 answer
  • During his lifetime A Redwood will become larger and more complex. It could be Alive because it displays which sign of life
    12·1 answer
  • How can biotechnology be used to develop medical treatments and give an example?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!