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
GalinKa [24]
3 years ago
7

The first protists probably appeared around a. 1.5 million years ago b. 170 million years ago c. 1.5 billion years ago d. 5 bill

ion years ago
Biology
2 answers:
mixer [17]3 years ago
7 0

Answer:

1.5 billion years ago

Explanation:

Protists are a collection formed up of protozoa, unicellular algae, and fungus forms. We will focus on the being part of this society: the protozoa (proto = first, zoa = beings). Protozoa are the earliest discovered collection of heterotrophic living that utilize and modify complicated meal particles into power. Although protozoans are only made up of a single cell, these organisms control to perform all the necessary responsibilities of life.  The protozoa are split into four principal associations: the ciliates, the flagellates, the heliozoans, and the amoebas.

slamgirl [31]3 years ago
6 0

Answer:

Option (C)

Explanation:

Protists are the kingdom that includes unicellular organisms. These organisms are eukaryotic in nature which means that it has a well-defined nucleus. They may be present in colonies or biofilm. But they re self-sufficient. Since the time of formation of these organisms, they have constantly undergone evolution forming a more complex type of organisms.  

<u>The first protists appeared during the proterozoic age at about 1.8-1.5 billion years back</u>.

Hence <u>the most appropriate answer is 1.5 billion years ago i.e option (C)</u>

You might be interested in
Natural resources are spread equally within a city is that true ?
GaryK [48]
False because its not all even, some areas have more than others
4 0
2 years ago
This is for Fossil Fuels.
Sedaia [141]

Answer:

<h2>Question no 4 answer</h2>

Fossil fuels will still provide 60% of energy in 2040, compared to 85% today, but the pattern of use will change, away from coal and towards gas, and increasingly concentrated in industry. Fossil fuel prices would be lower in a 2˚C scenario, with less need to mobilise high-cost reserves to meet demands.

<h2>Question no 3 answer</h2>

Carbon emissions trap heat in the atmosphere and lead to climate change. In the United States, the burning of fossil fuels, particularly for the power and transportation sectors, accounts for about three-quarters of our carbon emissions

<h2>Question no 2 answer</h2>

The premise of this Viewpoint article is that the sustainability of the electricity supply is very often addressed in narrow frames of reference, which sets up incremental decision-making. To more fairly compare the economic, social, and environmental aspects of renewables, such as photovoltaics, to fossil fuels, a broader view is required which needs to take into account the impacts of the fossil fuel supply chain.

<h2>Question no 1 answer</h2>

These non-renewable fuels, which include coal, oil, and natural gas, supply about 80 percent of the world's energy. They provide electricity, heat, and transportation, while also feeding the processes that make a huge range of products, from steel to plastics.

<h2>plz mark me as brainliest</h2>
7 0
2 years ago
In a Venn diagram, the separate circles contain characteristics unique to each item being compared, and the intersection contain
Greeley [361]
They both have a cell membrane, mitochondria, cytoplasm, ad a nucleus. Hope this helped! :)
4 0
2 years ago
Read 2 more answers
The ideal gas constant, R has several different values that could be used. Which quantity causes these differences ?
bekas [8.4K]

Answer:

Not sure about this, but I believe it's pressure. I'm not sure what exactly you're asking. I hope this helps!

Explanation:

The higher the pressure, the less volume the gas has.

8 0
3 years ago
Read 2 more answers
Archaea and bacteria are similar in which of the following ways?
gulaghasi [49]

Answer: Option A and B.

Archaea and bacteria are prokaryote and reproduce by binary fission.

Explanation:

Archaea are grouped of single celled organisms that have no cell nuclei. They are prokaryotes and reproduce by binary fission. They were formally grouped as bacteria with the name archaeabacteria but the classification is outmolded. They are now renamed as archaea bacteria as they are closely related to eukaryotes.

Bacteria also are single celled, microscopic organisms. They are prokaryotes and they reproduce by binary fission. They have are number of shapes ranging from spheres to rods.

5 0
3 years ago
Other questions:
  • Which cell structure is correctly paired with its primary function? 1. ribosome–protein synthesis 2. mitochondrion–movement 3. v
    6·2 answers
  • Explain the relationship of inheritance, mutations, and common ancestry.
    14·1 answer
  • The left side of the brain notices _____, while the right side grasps _____ quizlet
    7·1 answer
  • Why do scientists study galaxies
    8·2 answers
  • Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, these bones having develo
    11·1 answer
  • Use the drop-down menus to match each example to the fossil topic discussed, then to show how the
    8·2 answers
  • If the mother of a child has the recessive gene for cystic fibrosis (Cc), an autosomal disorder, and the father does not (CC), w
    12·1 answer
  • Running a mineral across a porcelain plate to see the color it leaves behind on the plate may be described as testing
    12·1 answer
  • Differentiate between the amount of initial energy from
    9·1 answer
  • Do fatty acid synthesis and degradation occur in the same location of the cell?.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!