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Hello!
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❖ Watson and Crick were most well known for the discovery of the double helix. The double helix is the twisted ladder of DNA.
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You just need to count the number of crest (high points) if waves that like pass the fixed point 1 second or some other time period. The higher the number is man, the greater the frequency is, Hope this helps!
Answer:
Transpiration
Explanation:
The surface of a leaf has many tiny pores, called stomata. The stomata allow carbon dioxide into the leaf so that photosynthesis can occur. They also allow water to leave the leaf by transpiration.This helps the plant to conserve water.