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
nexus9112 [7]
3 years ago
12

The oldest known fossils are ______ years old and resemble formations made by ______. Multiple choice question. 2.5 billion; cya

nobacteria
Biology
1 answer:
Lostsunrise [7]3 years ago
6 0

Answer: The question is not complete as options are not complete , the remain part are;

A. 3.7 years, photosynthetic bacteria.

B. 3.7 years cyanobacteria.

The correct option is

3.7 billion years old, cyanobacteria and stromatolite.

Explanation:

This is because cyanobacteria is the oldest fossil to exist and they have been in existence for about 3. 7 billion years. These cyanobacteria photosynthesized because they have thread like chlorophyll filament, they produce food through the process of photosynthesis which is needed for their survival and they release oxygen as bye product.

You might be interested in
Identify the properties of heat as it relates to the molecules within a body
Brut [27]

At the molecular level, the heat comes from the agitation of the molecules and therefore their atoms. This increase in agitation causes the molecules to be less condensed between them and will separate after breaks in the intermlecular bonds. This distends the material, as we see when we heat a metal, or a transformation of the phase of the material, such as melting ice or boiling water.

3 0
3 years ago
Anyone good at Biology could you give me a helping hand please!
andriy [413]
1. Anaphase. In <span>Anaphase the sister chromatids separate from each other to the opposite sides of the cells.

2. </span>Chromosomes would not separate into two nuclei. <span>Mitosis is a process cell division, where one cell divides into two identical cells.
</span>
3. Metaphase I. <span>Meiosis prophase I is the phase in which chromosomal crossing over occurs. The phase after prophase I is metaphase I.

4. </span>Its body cells would have 36 chromosomes, and its gametes would have 18 chromosomes. <span>In the gametes, there are half of the number of chromosomes present in the body cell.

5. </span><span>A species has to adjust rapidly to a changing environment. To adjust to the environment, crossing over is necessary, and it does not occur in mitosis, but meiosis.

6. 50 percent. 
Parents:          Yy      x     yy
Offspring:    Yy    Yy    yy   yy
50 % is Yy  and 50% is yy.

7. </span><span>One parent had white eyes and the other was heterozygous for eye color. The ratio in the offspring is 50-50. The only possibility is the following:
Parents:       Rr     x     rr
Offspring   Rr    Rr   Rr   Rr

8. </span><span>Their fur will be a mixture of red and white hairs. The offspring will be heterozygous. They will have alleles for both red and white hairs and both will be expressed.
</span>
9. Not enough information.

10. <span>Both of the parents' genotype must have been Pp. The genotype of the white plant is pp since it is recessive:
Parents:        Pp     x     Pp
Offspring:   PP   Pp   Pp   pp
One of the four is white.</span>

4 0
3 years ago
Breaking down food into simpler substances that the cells can use is the process of ____
Mandarinka [93]
I think it is called mechanical digestion.  Or alas, chemical digestion.  One of those.  Or both!

Hope helps-aparri

(thank yous are welcome)

7 0
3 years ago
ADH more directly effects the?
kupik [55]

Answer:

Kidneys

Explanation:

ADH is a chemical produced in the brain that causes the kidneys to release less water, decreasing the amount of urine produced.

5 0
3 years ago
While reviewing a client's prescriptions, the nurse finds that one of the prescribed drugs is redundant and notifies the primary
Nadya [2.5K]
The answer to this question would be: risk taking

In this case, the nurse <span>finds that one of the prescribed drugs is redundant and notifies the primary healthcare provider. To recognize the drug as redundant the nurse should have read some source about that drug. The nurse notifies the primary health care in hope to changes the medication. It was a risk-taking attitude since that means the nurse willing to take the risk to implement the knowledge.</span>
6 0
3 years ago
Other questions:
  • The pituitary gland is divided into _______ lobes.
    13·2 answers
  • Explain what would happen if conditions changed that causes the seaweed to die. Now striped fish stand out to predators more tha
    11·1 answer
  • What does a scientist do if his experiment disproves his hypothesis
    11·2 answers
  • Word Bank:
    11·1 answer
  • Which field of earth science seeks to understand why Jupiter's moon has so many active volcanoes?
    5·1 answer
  • 2.) Those that knew Randy stated he should not have gone treasure hunting because he had a premedical breathing
    6·1 answer
  • For the person that helped me
    13·1 answer
  • List the parts that make up a human body​
    6·2 answers
  • _____ cells form the body's skin, inner linings, and glands.
    12·2 answers
  • Hunting in the area causes all of the shrews in the area to be
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!