Counting the number of organisms in a small area and multiplying to estimate the number in a larger area is called

a.

direct observation.

b.

mark and recapture.

c.

population density.

d.

sampling.

What is primary succession? Give an example.

A projectile is launched horizontally east at a speed of 29.4 M/s towards a wall 88.2 m away. What is the velocity of the projectile at the moment it strikes the wall? A. 29.4 m/s down B. 29.4 m/s east C. 29.

How is static electricity generated

Most stars end their life as which type of star? A) giant B) white dwarf C) neutron D) main sequence

Light enters a Newtonian reflection telescope and hits a mirror inside the telescope to redirect the light to the eyepiece. The light strikes the mirror at an angle of 45 degrees.

Norma kicks a soccer ball with an initial velocity of 10.0 meters per second at an angle of 30.0% if the ball moves though the air for 3.2 seconds what's the horizontal distance traveled by the ball

Suppose s (t) is the position of an object moving along a line at time t is greater than or equal to 0. What is the average velocity between the times t=a and t=b? What is the instantaneous velocity at t=a?

Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. suppose that the mower moves with a 1-km/h speed, has a 0.5-m width, and a field is 360 ft long and 160 ft wide. 1 m = 3.281 ft.

Badri makes the table below to review the factors that affect the electric force between objects. Which change will correct the error in Badri's table?

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet