A is correct. Catalysts are substances that accelerate a chemical reaction, and enzymes are catalysts that increase the rate in cellular reactions.
Answer:
Grasshopper has open circulatory system.
Explanation:
Grasshopper has open circulatory system and they have a fluid cavities called haemolymph. Grasshopper have open circulatory system because the blood is not usually in the blood vessels. The hearts like structure pump the blood into the aorta and the blood flow from aorta in the body fluid, called haemolymph. The heart like structure is located in the upper part of the abdomen and pump fluid to the head and passes through organs and tissues.
Answer:
Touch
Explanation:
<em>Because your body will consist of skin at first which will have receptors and neurones to give you the feeling of feeling something when you touch it</em> hence touch is what you develop as a first sense
God created them when he created the world
