Answer:
Option A, oxygen in the atmosphere
Explanation:
The highest level of oxygen reached during this phase of the geological cycle of earth. The oxygen level in Carboniferous period accounted for 35% as compared to 21% of oxygen in the atmosphere in present time.
Due to high oxygen content, the giant and wide varieties of terrestrial animal and plant species evolved. For example – size of insects and carwlies increased, plant became extremely giant, increase in number of tree ferns etc.
Answer:
The answer is <u>C. only specific target cells</u>
Explanation:
- <u><em>Some hormones react with specific receptor sites on a cell membrane to stimulate the nucleotide</em></u>
The answer is mitosis, which is when two daughter cells separate from the parent cell with duplicated genetic material.
I hope I helped!
Glucose is converted into energy with oxygen in the mitochondria
Answer:
The sporangiophore grow vertically which is in an upward direction because it is positively phototrophic. This means that it grows towards the ray of light from the sun which is found above. This is usually due to the provision of solar(light) energy from the sun which is used for the photosynthetic processes of the plants
The rhizoides grow downwards because they are positively geotrophic. This means they grow according to the force of gravity which acts downwards.