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
yarga [219]
3 years ago
10

The appearance of banded iron layers in the rock record between 1.08 and 3.8 billion years ago reflect the alteration of oxygen-

rich and oxygen-poor conditions in the ocean at that time.
True or False
Biology
1 answer:
ohaa [14]3 years ago
8 0

The appearance of banded iron layers in the rock record between 1.08 and 3.8 billion years ago reflect the alteration of oxygen-rich and oxygen-poor conditions in the ocean at that time is True.

<u>Explanation:</u>

The banded iron formation of the rock is directly related with the atmospheric oxygen content of that time. The thorough study by the scientists revealed an interesting result. The study showed that about 3 billion years ago, in Canada, there were no oxygen in atmosphere or ocean as well.

This resulted in the increase of the photosynthesizing organisms. The chemicals released from the organisms reacted to the iron of the ocean to deposit iron oxide layer on rocks to form these layers.  

You might be interested in
What is the role of splindle fibers in mitosis​
UkoKoshka [18]

Answer:

Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.

Explanation:

8 0
3 years ago
The apples at the local supermarket have been genetically engineered to resist warmer temperatures than they did before. What do
Lera25 [3.4K]
The answer is C - Recombinant DNA. Why?

A transgene is a gene or genetic material that has been transferred naturally, or by any of a number of genetic engineering techniques from one organism to another. The introduction of a transgene (called "transgenesis") has the potential to change the phenotype of an organism.
7 0
3 years ago
Read 2 more answers
What is a comparative study of the similarities and differences in the embryos of different species?
kolezko [41]

Answer:

first the ways of adaptation and behaviour of plant

3 0
3 years ago
Question 3
Tanzania [10]
The air that we breathe in is an example of solid solution
4 0
3 years ago
Read 2 more answers
Define fitness as it relates to adaptation
irinina [24]

Answer:

Hi there!

Fitness in evolution means the ability to survive to reproductive age, find a mate, and produce offspring.

6 0
3 years ago
Other questions:
  • Which of the following is a chemical reaction?
    6·1 answer
  • A nerve is actually a long threadlike bundle of ________ that conduct electrical impulses.
    13·1 answer
  • Serratia marcescens cells produce a red pigment at room temperature. The red color of the colonies is an example of which of the
    15·1 answer
  • Crystal shape of diamond
    14·1 answer
  • Your biceps muscle is attached with tendons to the top of your humerus and to the end of your radius, near your elbow. What woul
    14·1 answer
  • The table shows the nature of reactants and products formed in a certain type of chemical reaction.
    5·1 answer
  • Stanimar is staying in the hospital after surgery. He starts to suffer from a fever, diarrhea, and abdominal pain. How did Stani
    13·2 answers
  • Cells can come in various shapes, such as spherical, cuboidal, squamous, and columnar. Regardless of their
    9·1 answer
  • Select the terms that are evaluated before assigning a Koppen-Geiger Scale rating.
    15·1 answer
  • Humans and other animals regulate cell growth and cell division. In humans which of these types of cells generally do NOT divide
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!