Most of earth's heat is from its formation and from that generated by the decay of radioactive atoms. True or False

Where is the nucleus of an atom located?

John decided to move from agriculture to the manufacturing sector. He abandoned his farm and shifted to a city. After a few years, when John visited his farm, he found the land covered with goose grass.

The allelic make up of a cell or individual is referred to as its

Tina's 10-year-old neighbor vomits every morning before school. what additional assessments would you perform, and what might you discuss with her? why?

If this population continued for the next 100 years with no changes in arm length, what could you say about these sea stars?

Which of the following statements is true? Natural energy sources are nonrenewable and being depleted. Current fuels are not polluting the air. Mercury released into aquatic ecosystems comes from rock erosion.

Which causes a decrease in the amount of dissolved oxygen in a lake? A. lower temperatures B. fertilizer runoff C. overfishing

If you were to breed a black male guinea pig to a brown female guinea pig in an attempt to determine which one was homozygous dominant and which one was homozygous recessive, how could you be certain that the guinea pigs are truly homozygous?

How many chemical bonds can each carbon atom form?

What could cause mutations to occur?