Answer:
I think A. The number of cacti, flowering shrubs, and desert trees that could grow during an extended dry period.
Explanation:
Answer:
B. often use tube feet to move around in their environment
Explanation:
Tube feet are tiny tubular projections of echinoderms on the underside (oral side). They are a member of the echinoderm water vascular system.
Tubular feet are used for feeding, breathing and shifting. They are arranged around the sides, in grooves. They work by hydraulic pressure. They are used to transfer food in the centre to the oral mouth, and may stick to surfaces. Tube feet allow certain animals to stick and travel slowly to the ocean floor. for example starfish uses tube feet for the above functions.
Hence, the correct option is B.
The growth of plants and formation of land mammals characterized the paleozoic era.
Hello,
To prevent pregnancy implanted progestins contained in porous silicone tubes are inserted under the skin.
Hope this helped,
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