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BartSMP [9]
3 years ago
12

The oldest known fossil belongs to the cyanobacteria. How did this fossil help to alter the atmosphere of ancient Earth's oxygen

levels?
Biology
1 answer:
JulijaS [17]3 years ago
4 0
Cyanobacteria are autotrophic and perform photosynthesis. Photosynthetic organism produce oxygen in the exchange for Carbon Dioxide. Cyanobacteria caused oxygen levels to rise in Earths atmosphere.
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Compare the reproduction in Hydra and Amoeba?​
MaRussiya [10]

Answer:

Hydra:

Reproduction by budding in Hydra.

Amoeba:

Reproduction by binary fission in Amoeba.

Hydra:

Budding means sexual reproduction in which a new organism develops from a bud in the parent.

Amoeba:

Binary fission is the type of asexual reproduction in which the parent divides to give rise to two daughter organisms.

Hydra:

In budding process, bud is simply an outgrowth of cells at one particular site.

Amoeba:

The parent replicates its genetic material and divides it equally between the two daughters in binary fission.

Hydra:

The bud or the newly formed organism remains attached to its parent until maturation.

Amoeba:

Both the cytoplasm and the nucleus of the parent divides into two.

6 0
3 years ago
– 3х + Зу = 3<br>-5х + y = 13​
kondaur [170]

Answer: 54xy

Explanation: 54xy

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2. A group of parrots is 20% DD, 40% Dd, and 40% dd. What is the allele percentage of d in this group?
Elina [12.6K]

Answer: C

Explanation:

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The gene theory declares that all organisms contain coded information in __________ which dictates the form and function of orga
lilavasa [31]

The gene theory declares that all organisms contain coded information in DNA which dictates the form and function of organisms.

<h3>What does the gene theory state?</h3>

Gene theory is one of the major principles of biology that explains the inheritance of traits coded by gene from parents to offspring.

This theory further explains that genes are located on chromosomes and consist of DNA, which stores them.

Therefore, the gene theory declares that all organisms contain coded information in DNA which dictates the form and function of organisms.

Learn more about gene theory at: brainly.com/question/4432306

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6 0
2 years ago
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