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
VLD [36.1K]
3 years ago
11

According to most scientific models, how many years ago did the first simple cells appear on Earth? A) 400,000 B) 4 million C) 4

00 million D) 4 billion
Biology
2 answers:
Akimi4 [234]3 years ago
8 0
I think it is 400,000 years ago
Andrei [34K]3 years ago
6 0
I think it's A) 400,000
You might be interested in
Which of the biomes'tundra, coniferous forest, temperate broadleaf forest, temperate grassland, savanna, chaparral, desert, trop
Yuki888 [10]
The answer is:  "chaparral" .
_____________________________________________
3 0
3 years ago
All of the following best describes how does pollution affect a food web except?
LUCKY_DIMON [66]
I believe it’s D. Secondary consumers eat plants, if i remember correctly.
6 0
2 years ago
Read 2 more answers
If a DNA strand has 32 % guanine, what percent thymine does it contain?
Alex_Xolod [135]

Answer:

B

Explanation:

Guanine and Cytosine pair together. So, if 32 percent is guanine, then 32 percent should also be cytosine. This is a total of 64 percent. The remaining 36 percent is split between thymine and adenine. So, Thymine will have half of 36 percent which is 18 percent.

3 0
2 years ago
How do you know that individual 1 is heterozygous for the trait
Akimi4 [234]
Heterozygous is having 2 different alleles of a certain gene, meaning one is not dominant. Instead one is a recessive such as Aa
3 0
3 years ago
I WILL GIVE BRAINLIEST!!!
Tresset [83]

Answer:

A - Nondisjunction occurred during meiosis

Explanation:

7 0
2 years ago
Other questions:
  • True or false? t-cells get their name from the thyroid gland in which they are stored.
    14·1 answer
  • Which equation best represents the process of photosynthesis ? A. Water+ carbon dioxide (light) > sugars + oxygen B. Sugars +
    13·1 answer
  • Why do cells produce more atp under aerobic conditions than under anaerobic conditions?
    5·1 answer
  • How many bones does a human hand have
    5·1 answer
  • Blue eyes are dominant to red eyes in rabbits show a heterozygous blue eyed rabbit crossed with a red eyed rabbit
    10·1 answer
  • After mitosis, how many chromosomes with each daughter cell have
    7·1 answer
  • What human activity contributes to air pollution?
    6·2 answers
  • An ideal frictionless machine: O has very little friction O has no friction does not require work input PLEASE HELPP MEEE ​
    9·2 answers
  • When an organism fights with another organism over a limited resource it is called?
    5·1 answer
  • Provide an environment (bowl or container) filled with 100 of each "prey" type (Consider beans, uncooked pasta, or cotton balls)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!