a. What are the three main phyla of worms? b. What are the common characteristics of the bodies of all worms? c. How do worms get information about their environments?

What is wrong with the following statement? “Given any two bodies, the one with the higher temperature contains more heat.”

Frogs have bodies that are specialized for jumping, yet they have webbed feet. How are webbed feet beneficial for frogs?

Newton’s law of gravitational attraction states that if two bodies are at a distance r apart, then the force F exerted by one body on the other is given by $F(r)=-\dfrac{k}{r^{2}}$ Where k is a positive constant. Suppose that, as a function of time, the distance between the two bodies is given by $r(t)=49t-4.9t^2, 0\leqslant t\leqslant10$

(a) Find the rate of change of F with respect to t.

(b) Show that $(F \circ r)'(3)=-(F \circ r)'(7)$

Read the following comment by an Aztec describing the Spanish conquerors:

"They longed and lusted for gold. Their bodies swelled with greed, and their hunger was ravenous; they hungered like pigs for that gold."

What do you think is meant by "they hungered like pigs for that gold"?

Suppose an object was sent far out in space, away from galaxies, stars, or other bodies. How would its mass change? Its weight?

Two skaters of unequal mass have the same speed and are moving in the same direction. If the ice exerts the same frictional force on each skater, how will the stopping distances of their bodies compare?

The accompanying photos each illustrate either a typical igneous, sedimentary, or metamorphic rock body. Which do you think is a metamorphic rock? Explain why you ruled out the other rock bodies .

What bodies in the solar system orbit between Mars and Jupiter? a. comets b. stars c. asteroids d. meteorites

What is the magnitude of the gravitational force between two $1\ \text{kg}$ bodies that are $1\ \text{m}$ apart?

(a) The dwarf planet Pluto and its moon, Charon, are separated by 19,600 km. Neglecting atmospheric effects, should the 5.08-m-diameter Palomar Mountain telescope be able to resolve these bodies when they are 4.50\times 10^{9} km from Earth? Assume an average wavelength of 550 nm. (b) In actuality, it is just barely possible to discern that Pluto and Charon are separate bodies using a ground-based telescope. What are the reasons for this?

Why do we not notice the effects of $10 ^ { 14 }$ neutrinos passing through our bodies every second?

Use scientific notation to calculate the answer to the given problem. The body of a 150 -lb person contains about $2.3 \times 10^{-4} 1 \mathrm{~b}$ of copper. How much copper is contained in the bodies of $1200$ such people?

In the following sentences, underline the predicate nominatives. The main difference between wasps and bees is that wasps have long, narrow bodies and slim waists.