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
AURORKA [14]
3 years ago
6

What helped scientist recognize that the earth was a million years old

Biology
1 answer:
Dmitry [639]3 years ago
3 0
Clues such as fossils such as bones, footprints, tar, etc,  preserved underground helped inform scientists. You can also count how old a tree is when you cut it open and there are some alive for thousands of years so that is a possible way.
You might be interested in
For mitochondria where an uncoupler for oxidative phosphorylation is present, which statement is TRUE?
olga nikolaevna [1]

Answer:

The correct answer is statement d.

Explanation:

In oxidative phosphorylation that takes place in mitochondria, the uncouplers prevent the coupling in between the phosphorylation reactions and electron transport, and therefore, prevent the synthesis of ATP without influencing the ATP synthase and respiratory chain.  

The uncoupler always exhibits its influence on the synthesis of ATP. The 2,4-dinitrophenol functions as an uncoupler at the time of oxidative phosphorylation. The NADPH and FAD functions as an electron carrier.  

3 0
3 years ago
How is an hiv infection different from a cold virus infection?
natka813 [3]
HIV directly attacks CD4 helper lymphocytes directly. (D)
4 0
3 years ago
Read 2 more answers
Which feature is found in eukaryotic cells but not in prokaryotic cells? A. plasma membrane B. nucleus C. cytoplasm D. genetic m
kiruha [24]

B is the correct answer

A prokaryote cell has no distinct nucleus with a membrane and neither does it have other specialized organelle.

In a eukaryotic cell, the genetic material is DNA in the form of chromosomes which are found within a distinct nucleus.

Examples of prokaryotes Streptomyces soil bacteria (from which streptomycin antibiotic is derived), Escherichia coli bacterium and Streptococcus bacteria (which causes strep sore throat).

Examples of Eukaryotes include protozoa such as amoeba, fungi, plants, animals and generally all  multicellular organisms.


6 0
3 years ago
Read 2 more answers
if the Earth is 150,100,000 x 150,100,000 of land area, how much land area is included in the biodiversity hot spots???
REY [17]

Answer:

Protecting Biodiversity: Biodiversity Hotspots About half of all plant and animal spp. ... If Earth has 150,100,000 sq km of land, how much land area is included in hot spots 0.1 x 0.157 = 0.0157 0.0157 x 150,100,000 = 2,356,570 sq. km.

Explanation:

hope it helps you

❤❤❤❤❤❤

5 0
3 years ago
A city is concerned about global warming in smoke. It wants to reduce the impact of its use of fossil fuels. Explain how the cit
dolphi86 [110]

Answer:

a

Explanation:

i believe it's a but I'm not sure

3 0
3 years ago
Read 2 more answers
Other questions:
  • What are 2<br> factors that prevents joints from rubbing and wearing down your bones
    13·2 answers
  • How are protozoans differentiated by mean of their locomotary organelles?
    7·2 answers
  • You learned in your psychology course that nociceptors, which are found in the skin, muscles, and internal organs, are specializ
    14·2 answers
  • What is the job of the tendons
    14·2 answers
  • What kind of cell contains DNA and a nucleus?
    7·2 answers
  • Describe how the ancestors of whales moved from the land to the sea.
    10·1 answer
  • Question 3 of 10
    10·1 answer
  • The Punnett square below shows the genotypes of Amelia's parents. R alpha If R represents the dominant gene for straight hair an
    14·1 answer
  • How do hypothesize identical twins come about
    5·1 answer
  • The amniotic egg, which is present in reptiles, birds, and mammals, is a good example of: horizontal gene transfer. coevolution.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!