All of the following have an internal skeleton except

a. sand dollars.

b. sand fleas.

c. sea stars.

d. sea lilies.

A change in an organisms genetic code is called what

Identify the terms described by selecting the correct word from the drop-down menu. Anything that has mass and takes up space The part of Earth in which life exists, including land, water, and air

Someone stretches a spring apart in their fingers and holds it there, not moving. This is an example of Select one; 1. Someone creating energy 2. Potential energy tuming into Kinetic energy 3. Kinetic energy tuming into potencial energy 4.

Which statement accurately describes a relationship in the food web

A scientist cites fossil evidence to argue that modern whales evolved from relatively small, land-dwelling mammals. The scientist claims that a variety of fossil findings can be ordered in a sequence that demonstrates the evolutionary lineage.

Part 1: Universal solvent Describe what happens in each beaker.

What will likely happen to the body if the joints are stiff, infected or not functioning as expected?

A child with a bloated belly, thin hair, and an inability to concentrate may be suffering from malnutrition

In most species, the female frog lays her eggs directly in the water as a male clasps her back and releases sperm. The fertilized eggs hatch into legless, aquatic tadpoles. Most tadpoles feed on algae, and have gills.

Part 2: Research one major hurricane, category 4 or greater, from any time period. In two or more complete sentences, describe the hurricane. Include the name of the hurricane, date, location, and category.