The inner calcium matrix of a sea urchin is called what?

mantle

What are two reasons for why a species might disappear from the fossil record?

The gel-like material the cell membrain and the nucleus that hold all the organelles of the cell is caelled?

As a cell gets larger, what kind of crisis might occur (related to DNA)

The distortion of enzyme molecules which occurs at high temperatures is known as

Structure is responsible for storing genetic information for the cell?

If an object with a mass of 100 kg on earth is taken to a planet that has more gravity, how will this affect the object's mass and weight?

Lamarck's mechanism of change can be called

What is carrying capacity and what does it mean for ecosystems?

Why was the evolution of a coelom a critically important innovation for animals? a) The coelom can act as a hydrostatic skeleton. b) The coelom gives rise to a complex nervous system. c) The coelom made it possible for animals to colonize land.

Marine mammals, with a few exceptions, are a. oviparous b. ovoviviparous c. viviparous