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AURORKA [14]
3 years ago
12

Cyanobacteria were the first photosynthetic organisms. How were they responsible for allowing higher life forms to evolve? A. Th

ey released oxygen, which mixed to form iron, and later ferrous oxide, in the air. B. They released carbon dioxide, which evolving animals needed. Or C. They released oxygen, which created the ozone layer, resulting in reduced mutation rate.
Biology
2 answers:
bezimeni [28]3 years ago
8 0
<span> They released oxygen, which created the ozone layer, resulting in reduced mutation rate.

</span>
Andrews [41]3 years ago
6 0
B THEY RELEASED CARBON DIOXIDE, WHICH  EVOLVING ANIMALS NEEDED.
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After the movie is over, Illana's heart rate starts to go back down, and the hairs on the back of her neck return to normal as s
Nina [5.8K]

Answer:

the heart it is because the heart beats and it goes up and down

4 0
2 years ago
The number of ducks in a pond is equal to the square root of the number of fish, and the number of turtles is equal to the cube
brilliants [131]

Answer:

There are 64 fish, 8 ducks and 4 turtles.

Explanation:

From the question, there can be from 2 to 99 fish in the pond. However, there cannot be fractions in the number of fish, ducks or turtles. Hence, the number of fish must have both of a perfect square and perfect cube. The perfect squares from 2 to 99 are 4, 9, 16, 25, 36, 49, 64 and 81. The perfect cubes from 2 to 99 are 8, 27 and 64. Since only 64 fits both criteria, the number of fish is 64. The number of ducks is the square root of number of fish, which is the square root of 64. The square root of 64 can be either positive 8 or negative 8. However, there cannot be negative numbers, so there are 8 ducks in total. The number of turtles is the cube root of the number of fish, which is the cube root of 64 and it is 4.

7 0
3 years ago
Which component is missing from the process of cellular respiration? Glucose + ________ → Carbon Dioxide + Water + Energy
Vesna [10]
Oxygen is the missing component
6 0
3 years ago
Read 2 more answers
What is natural selection? How does this work on organisms in nature? (should be at least 3 sentences)
BigorU [14]

Answer:

The natural selection is a theory made by Charles Darwin where animals better adapted to their environment tend to survive and produce offspring. for example, there are about 50% of beetle that are green and 50% orange.  If crows tend to eat green beetles more, there will be more orange beetle to produce offspring so there wood then be less green beetles to be eaten by crows.

An environment can change over time and this will cause for the animals living in the environment to adapt as well. These changes will occur when an animal with undesirable traits don't survive to reproduce. The offspring of individuals that do survive to reproduce will inherit their parent's desirable traits. Over many generations, the desirable traits will be seen in more-and sometimes all- of the individuals in the population

Explanation:

That is the natural selection told in my words, but please do your best to rewrite your own sentence/paragraph. Copying another's work is called plagiarism and any teacher can automatically give you a 0% for this.

Anyway, goodluck.

<em>Please mark as Brainliest and feel free to ask for any more information.</em>

<em>                                                       ~~~They Speak To Me~~~                                                            </em>

4 0
3 years ago
How might a single base substitution in the sequence of a gene affect the amino acid sequence of a protein encoded by the gene,
vovangra [49]
The effect differs. It could produce a different amino acid in the sequence because the corresponding codon has changed. It could also prevent the production of the originally intended sequence by changing one of the amino acids of a "start" codon (aka AUG) or extend the protein's sequence by modifying a "stop" codon (UAA, UAG, UGA or UGG), producing a new protein that might be useless or have different effects on the cell.
4 0
3 years ago
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