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
EastWind [94]
3 years ago
9

At the time of the origin of LUCA which mode of nutrition was NOT being used?

Biology
1 answer:
Vinvika [58]3 years ago
6 0

Answer:

C. Photoautotrophs-oxygenic.

Explanation:

LUCA is an abbreviation of the ‘Last Universal Common Ancestor’. The LUCA was a microorganism which lived around 4 billion years ago. The evidence had shown that the LUCA was lived deep underground in hydrothermal vents. These vents were rich in iron-sulphur. It did not use air but made its food from the metal-rich environment surrounding it. It made organic compounds such as ammonia for its metabolism from elements such as hydrogen, carbon dioxide and nitrogen.

You might be interested in
What process ensures that organisms will have plenty of oxygen?
disa [49]
The process of meiosis.
7 0
2 years ago
Read 2 more answers
Now it is time to do some word problems! In pea plants purple flower color is dominant over white flower color. A pea plant that
soldier1979 [14.2K]

Answer:

All the offsprings would be heterozygous purple colored flower

Explanation:

Given

Purple color flower is dominant over white color flower

Let the allele for purple color of flower be represented by "P"

and the allele for white color flower be represented by "p"

A pea plant that is homozygous purple-flowered is crossed with a pea plant that is white-flowered.

Genotype of homozygous purple-flower is "PP"

and Genotype of homozygous white-flower is "pp"

Cross between PP and pp produce the following offspring

PP * pp

Pp, Pp , Pp , Pp

All the offsprings would be heterozygous purple colored flower

5 0
3 years ago
The structure which produces pollen is called the .<br><br><br><br><br> .
Feliz [49]
The stamen is the part of the flower that produces pollen. 
8 0
3 years ago
Read 2 more answers
Greenhouse gases are measured by their ability to trap outgoing solar radiation and convert it to heat, warming the atmosphere.
Gnom [1K]

Answer:

Greenhouse gases, such as carbon dioxide, methane, nitrous oxide, and certain synthetic chemicals, trap some of the Earth's outgoing energy, thus retaining heat in the atmosphere. This heat trapping causes changes in the radiative balance of the Earth—the balance between energy received from the sun and emitted from Earth—that alter climate and weather patterns at global and regional scales.

Multiple lines of evidence confirm that human activities are the primary cause of the global warming of the past 50 years.1 Natural factors, such as variations in the sun's output, volcanic activity, the Earth's orbit, the carbon cycle, and others, also affect Earth's radiative balance. However, beginning in the late 1700s, the net global effect of human activities has been a continual increase in greenhouse gas concentrations.

This change in concentrations causes warming and is affecting various aspects of climate, including surface air and ocean temperatures, precipitation, and sea levels. Human health, agriculture, water resources, forests, wildlife, and coastal areas are all vulnerable to climate change.

Many greenhouse gases are extremely long-lived in the atmosphere, with some remaining airborne for tens to hundreds of years after being released. These long-lived greenhouse gases become globally mixed in the atmosphere and their concentrations reflect past and recent contributions from emissions sources worldwide. Others, like tropospheric ozone, have a relatively short lifetime in the atmosphere.

Explanation:

Brainliest please?

6 0
2 years ago
The gene for a certain syndrome is present on a Y chromosome. A man carries the gene for this syndrome. Which of the following i
mamaluj [8]

Answer:

A - Only a Boy Can get a Y Chromosome

Explanation:

MARK AS BRAINLIST

7 0
3 years ago
Read 2 more answers
Other questions:
  • Use the Law of Syllogism to draw a conclusion from the two given statements.
    8·1 answer
  • If there is a loss of balance in biodiversity, describe at least 5 possible consequences for the sustainability of life on earth
    6·1 answer
  • How does doppler effect related to expanding universe
    7·2 answers
  • Identify the structure labeled B <br><br> A. Nucleotide <br> B. Base <br> C. Phosphate <br> D. Sugar
    6·2 answers
  • Which choice names the two parts of Earth that make up the lithosphere?
    15·2 answers
  • What’s the space at the back of the oral cavity called?
    9·2 answers
  • Which is a role of helpful bacteria.
    10·2 answers
  • A population of lizards lives in a marsh near the ocean. Members of this population have striped tails that can be yellow, orang
    14·1 answer
  • What would happen if a dominant trait joined with the recessive trait? What is the end result? (Based off Gregor Mendel)
    12·2 answers
  • Which of the following describes a parasite? (I know it’s between B or D but I’m not sure which one, also, please don’t put link
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!