<span>During JURASSIC period the first true mammals appear.</span>
Water boils at 212 degrees farenhiet
I can answer the third one:
Photosynthesis takes place in two stages<span>: light-dependent reactions and the Calvin cycle (light-independent reactions).</span>
Answer:
It needs the spines for protection
Explanation:
The cactus would develop the spines as a form of protection to protect itself from being consumed and to survive longer.
The plants which will grow in sunlight will be able to perform photosynthesis while the other in dark will not and die slowly.
<h3>
What is Photosynthesis?</h3>
This is the process in which green plants manufacture their food in the presence of sunlight.
The plants which is exposed to sunlight will activate the photosynthetic reactions and produce food such as glucose.
Read more about Photosynthesis here brainly.com/question/19160081
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