Which structure evolved in cells approximately one billion years ago that allowed for the forming of more complex, multicellular organisms? A) nucleus B) ribosome C) plasma membrane D) golgi apparatus

The layer of earth that contains the tectonic plates is called the

What is another word used for states of matter?

Why is the habitable zone important for Exoplanets?

In an experiment to see if having a nurse come three times to visit the homes of newborn babies reduces doctor visits, what is the independent variable

Which of the following correctly describes what the parts of the DNA molecule are made of? (Select all that apply.) a) rungs-a phosphate group and a sugar b) backbone-bases c) backbone-a phosphate group and a sugar d) rungs-bases

Reflection about endocrine

The Consumer Price Index (CPI) measures the

When describing a community, a biologist would discuss A. every population that lives together in an area. B. biome that exists in the biosphere. C. every organism that can produce offspring together. D. every ecosystem that is part of a biome.

What are the 2 elements involved in the sun's production of energy?

The biggest risk factor for the development of skin cancer is excessive exposure to ultraviolet radiation from sunlight. Exposure to UV light in a tanning booth is safer. Is this statement true or false?