Some spicules are formed of the mineralized substances calcium carbonate and silica, while others are made of an organic substance called spongin. Sponginskeletons<span> were and are used as scrubbers in bathtubs, though they are fairly expensive. The ubiquitous bathtub accessory called a lufa is NOT a </span>sponge<span>, but a plant.</span>
Answer:
carbon dioxide answer is c
<span>The car is passed by a motorcycle that is moving faster than it which means both the car and the motorcycle is moving in the same direction. Since both object move in the same direction, the relative speed of the motorcycle would be slower. The speed would be:
relative speed= motorcycle speed - car speed
</span>relative speed= 80MPH- 55MPH= 25MPH
Answer:
6 electrons
Explanation:
2 in the first shell and 4 in the next, adding up to 6
