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
stealth61 [152]
2 years ago
13

How do you think scientists know how old things are?

Biology
1 answer:
stellarik [79]2 years ago
6 0

Answer:

looks, feels, how hard it is, how soft, where it came from

Explanation:

You might be interested in
What is the definition of oceanography?
kenny6666 [7]
Hi there!

The definition of Oceanography is -

The study of the Ocean.

Hope this helps!

~Alexa
6 0
3 years ago
An average what takes about 5 kilograms of Carbon Dioxide a year and makes about the same amount of oxygen for us to breathe.
swat32
A tree is the answer
6 0
3 years ago
Why are the models of solar systems that you can purchase in stores not to scale?
k0ka [10]

Answer:

because the real planets are huge

Explanation:

lma o

8 0
2 years ago
Read 2 more answers
Which row in the chart below contains correct information concerning synthesis??
zimovet [89]
The chart below contains correct information concerning synthesis is <span>amino acids - enzymes. 

</span><span> Amino Acids & Enzymes. Complementary </span>Protein<span> Sources have all of the amino acids to create the </span>proteins<span> your body needs. </span>Proteins<span>, composed of many amino acids, (the molecular building blocks of </span>proteins<span>), 20 of them are very important and are needed for muscle and tissue building, repair and maintenance.</span>
5 0
3 years ago
1. a closed circulatory system is one in which
lys-0071 [83]
Just took the quick check 100%!! Lets keep it 100.

1. B  (Blood flows through a system of blood vessels and throughout the body)
2.C (I<span>n blood vessels and sinuses)
3.B (</span><span>Oysters do not move around, but squid are very active)
4.D (</span><span>It is difficult for single pump to force blood through the entire system of a large animal)
5.A (</span><span>Exchanging carbon dioxide for oxygen from the air)</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • Real life examples of . Cytoplasm
    14·1 answer
  • Scientists think deforestation is one cause of _____, because carbon dioxide increases when people burn trees to clear land.
    12·2 answers
  • Some proteins that are on the surface of mammalian cells contain carbohydrates. these proteins are synthesized by _______ and th
    5·1 answer
  • reen and brown algae share many common features. Both have pigments for trapping sunlight and use photosynthesis for energy. Bot
    5·1 answer
  • Which statements describe long-term environmental changes? Check all that apply. They occur in minutes or within hundreds of yea
    9·2 answers
  • What is an example of cell analogies? Ex: Board games, apps, business places, etc. Cells to use in your analogy: Vacuoles, cell
    9·1 answer
  • Is glycerol made of nucleic acid?
    7·2 answers
  • Pistil is the male reproductive part of the plant.<br><br><br><br><br> True or false?
    14·2 answers
  • A recipe for sugar cookies calls for an oven to be preheated to 175c, evaluate which of the following answers are the equivalent
    11·1 answer
  • Help plz:
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!