Answer:
A
Explanation:
the best choose is A..........
Explanation:
The answer is A.
When the body temperature returns to normal,the respiratory system sends a message to the skeletal system to stop shivering.
First they minimize the size of their leaf to prevent evaporation, second they have big trunk that could hold a lot of water, and third they have this long root to search water
Answer: C
Explanation:
LD50 is a measure of toxicity in animals. A chemical with a smaller LD50 is more toxic and in this question, Shiga toxin has a lower LD50, thus it is more lethal.
