Answer:
Plants. Some Bacteria. Algae. These 3 are the photosynthetic autotrophs..
Why the others don't fit:
Athropods are hetertrophs. Not all bacteria are autotrophs. Only some protists are autotrophs.
I know that they use it for sensing danger
Answer:
1. Less Cows 2. Less meat
Explanation:
Tapping on the patellar tendon stretches<span> receptors called the </span>muscle<span> spindles in the</span>quadriceps muscle group<span> of the anterior thigh. This stimulus evokes a rapid motor</span>reflex<span> to </span>contract<span> the </span>quadriceps<span> and shorten the </span><span>muscles</span>