Arthropods do not grow very large because a) they do not have the muscles to support the weight of a large exoskeleton
b) they can not conserve water
c) they have a ventral nervous system
d) they have a poor respiratory system

Which statement describes absolute and apparent brightness? absolute brightness and apparent brightness are identical ways to describe the brightness of a star. absolute brightness and apparent brightness change with the distance from the star to the observer. absolute brightness depends on the distance from the star to the observer, whereas apparent brightness is always the same. absolute brightness is the actual amount of light produced by the star, whereas apparent brightness changes with distance from the observer.

What is the power of 10 when 0.00503 is written is scientifically notation

Some studies have found that what percentage of students have cheated in some form? a. 10% b. 25% c. 45% d. 75%