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
Effectus [21]
3 years ago
9

What type of information do scientist use to determine the approximate age of the earth

Biology
2 answers:
NARA [144]3 years ago
3 0
Scientists use all sorts of different discoveries to help date-back the day Earth was created. Some of these include types of rock, fossils, trees, chemicals in water, minerals, and elements.
igomit [66]3 years ago
3 0
Scientists look at layers of rock and fossils to determine the age of the earth. 
You might be interested in
Which of these describes a scientific theory?
lesya692 [45]

Answer:

good question

Explanation:

4 0
3 years ago
Read 2 more answers
Why are pigments such as chlorophyll needed for photosynthesis
Vlad [161]

Answer:

The chlorophyll pigment have photosystem 680/ PS I which captures the sunlight. Then the pigments gets excited and photosynthesis starts. Without chlorophyll photosynthesis can't happen.

Explanation:

Photosynthesis occurs in the chlorophyll pigment of the plant. They have the capacity to trap light energy and convert its energy to form glucose and oxygen.  

The chlorophyll is a double layer membrane structure. In it two photosystems works i.e. photosystem I and photosystem II. In the photosystem I light is trapped.  

In the chlorophyll thylakoids are present which have photosystem 680. It captures the photons coming from the sun. The photons are the light of different wavelengths which are absorbed by plants.  

The photon have more energy, and when it comes in contact with PS 680, the pigments get excited. Then they release high energy electrons which helps to form ATP, NADPH. Because it is a light dependent reaction.

Glucose and oxygen are formed in the stroma as it does not require light. It is a light independent reaction.

Therefore, chlorophyll is first require to capture photons coming from sun.

6 0
3 years ago
Select all that apply. Lipids _____.
quester [9]
1st one, fats/phospholipids/steroids.
2nd one, cholesterol and saturated fats.


5 0
3 years ago
How the size and growth rate of the human population has changed in the last 200 years
Stels [109]
It changed as more food more games less sleep
3 0
3 years ago
Read 2 more answers
Seed packets give a recommended planting depth for the enclosed seeds. The most likely reason some seeds are to be covered with
dusya [7]

Answer:

The most likely reason some seeds are to be covered with only 1/4 inch of soil is that <u>the seeds require light to germinate.</u>

Explanation:

This seed packets does not say anyhing about temperature so we can rule out higher temperature. It is really rare to plant with seeds does not have any cotyledons and also we can't really know it from the question. Etiolation response can also be found in seedlings also from this question we can't know this for sure.

Only thing that is changes if you cover the seeds with only 1/4 inch of soil is light. If you completely cover this seed with soil it wouldn't grow.

8 0
3 years ago
Other questions:
  • The difference between tight junctions, desmosomes, and gap junctions is that
    6·1 answer
  • What does the nurse tell a pregnant patient about self-management during maternity care?
    5·1 answer
  • Perspiration leaves the body through the _____.
    11·2 answers
  • 2. All seed plants are heterosporous and produce pollen grains as well as seeds. However, there are examples of transitions betw
    15·1 answer
  • 8. 20,000 to 22,000 in humans<br>gene<br>autosome<br>sex chromosomes<br> xx​
    15·1 answer
  • Gila monsters are very well adapted to their homes. They have thick skin to prevent water loss and they burrow to escape the hea
    6·2 answers
  • Which of the following is an example of technology we currently add to people's bodies? O A Computer brain OB Electronic lungs O
    15·1 answer
  • In this experiment, you are looking at the effect of various germicides on microbial growth. The organism that you are using for
    15·1 answer
  • What are important of some natural things ​
    12·2 answers
  • Why is it important to avoid bias
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!