if an average of 5000 asteroids bombarded earth every million years during the hadean, calculate the total number of asteroid impacts that occurred during this eon.

In a protected grassland preserve, there are herds of antelope and zebra and a pride of fifteen lionesses with cubs. A conservation program for lions plans to move the pride to a national park fifty miles north.

What is the term for a group of organisms that can reproduce and have fertile offspring

What was Mohorovičić's observation? Seismic waves travelled at constant speeds. Seismic waves penetrated all Earth's layers. Seismic waves could not go through the brittle crust. Seismic waves travelled at varying speeds.

What is a carbon sink but is not part of the carbon cycle?

How lotus adapt to live in water

Choose the neurotransmitter that best fits each definition or description. 1. crosses the synapse between a motor neuron and a muscle fiber to produce a muscle contraction. 2.

In what two places on plants do seed grow?

Which statement describes gravity? Check all that apply There is no defined unit of measurement for gravity Gravity is the force that pulls objects toward Earth's center Objects that have a small mass will have no gravitational pull Gravitational

Which statement about crustaceans is true? * (A) all have the same number of appendages (B) all have an internal skeleton (C) all have an exoskeleton (D) only some have jointed appendages

5. The measurement of the amount of friction a surface will generate is called the of friction'.