Based on radiometric dating and the rock and fossil record, scientists have concluded that life has been present on Earth

You have just discovered a new organism It is a single cell and has a cell wall but no nucleus what kind of organism is it Explain your answer

What is the part that elevates the stigma

Which of these are families of elements? A. metals and noble gases B. shells and nonmetals C. properties and rare earth elements D. metalloids and atoms

What is the significance of environmental factors to the health of individuals and to public health

What would a dog living now and a cat living thousands of years ago have in common

These are organism that come from the same cell and are genetically identical to one another

The atmosphere will likely contain more carbon dioxide and less oxygen in the future A. if all coal burning power plants are replaced by wind turbines. B. if the rate of deforestation continues to increase. C.

8. What aspects of the experiment should Victor have held constant?

A tornado rips through the North Carolina mountains and destroys a huge forest. This decrease in the tree population is the result of a A) type of punctuated equilibrium. B) density dependent limiting factor. C) primary succession limiting factor.

What kingdom do eubacteria and eukaryotes belong to?