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
Sedaia [141]
4 years ago
5

The Precambrian era begins with

Biology
1 answer:
pychu [463]4 years ago
6 0

Answer: formation of the oldest rocks with recognizable fossils in them.

You might be interested in
Compare and contrast the process of digestion in cindarians and echinoderms
Lapatulllka [165]
Cnidaria - incomplete digestion [have only a single opening] ,digestion is extracellular and intracellular ,they have stinging casules called cnidoblast which helps for anchorage,defence and capture prey.
echinodermata - complete digestion[mouth on ventral,anus on dorsal],have water vascular system helps in locomotion ,capture of prey,transport of food....digestion is intracellular
4 0
3 years ago
The main regulator of carbon dioxide in the atmosphere because carbon dioxide dissolves easily in it
enot [183]

The ocean is the main regulator of co2 in the atmosphere because co2 can dissolve easily in it

3 0
2 years ago
Which of the following lists the levels of an ecosystem in order from largest to smallest?a. population, organism, community, ec
mr Goodwill [35]

The answer to this question is letter D.

3 0
2 years ago
Read 2 more answers
In hemoglobin, the transition from t state to r state (low to high affinity) is triggered by:_________
Elena L [17]

In hemoglobin, the transition from t state to r state (low to high affinity) is triggered by Bisphosphoglycerate (BPG)

  • Bisphosphoglycerate (BPG), also known as 2,3-Disphosphoglycerate (2,3-DPG), aids in the transition of hemoglobin from a high-oxygen-affinity to a low-oxygen-affinity state.
  • 2,3-BPG binds to hemoglobin, causing oxygen to be unloaded. Furthermore, 2,3-BPG reduces hemoglobin's affinity for oxygen. As hemoglobin is unloaded in our tissues, 2,3-BPG binds to it, promoting oxygen unloading.
  • When we increase the concentration of 2,3-BPG in our blood, the oxygen binding curve shifts to the right. This means hemoglobin will have a lower affinity for oxygen and will be able to deliver more oxygen to our body's tissues and cells.

Learn more about  Bisphosphoglycerate (BPG) from here:brainly.com/question/8885734

#SPJ4

4 0
2 years ago
If you could be any animal, what would you be? And why?
natali 33 [55]

Answer:

A cat

Explanation:

Because if I were a pet cat at least someone would take care of me and I would not have to do any real things like responsibilities.

3 0
3 years ago
Other questions:
  • How do birds and dogs both use DNA as instructions for building their bodies even though they are very different organisms? A. t
    11·1 answer
  • Humanism is associated with the renaissance because humanists
    11·1 answer
  • A homozygous variety of opium poppy (papaver somniferum laciniatum) with lacerate leaves was crossed with another homozygous var
    5·1 answer
  • PLZZZZZZZZZZZZZZZZZZ HELP ASAP WILL GIVE BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    10·1 answer
  • What is an example of a biotic factor in a biome?: * A. scavengers B. producers C. soil
    13·1 answer
  • When the sun moon and earth are aligned,ocean tides are larger-high tide is higher,low tide is lower-than when they are not alig
    6·1 answer
  • Building a Macromolecule Virtual Lab Instructions: Complete the Building a Macromolecule Virtual Lab from the lesson assessment
    11·2 answers
  • What is nitrification?
    13·2 answers
  • What animals belong to the order Ungulates or hoofed mammals?
    8·1 answer
  • What type of selection might occur in a population of beetles after a new predator is introduced into an ecosystem?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!