What does the metamorphosis of a frog involve?

Mutations can occur in different cell types, what are these two types called?

Couples who cohabit are characterized by:

A group of scientists examined a meteorite from Mars and found a carbon-rich substance that is produced when microorganisms decay. They concluded that the meteorite provided evidence there was once life on Mars. Why is this an emerging idea?

Some organisms use chemosynthesis to survive. where do they get their energy for this process

Do Primary producers generally form the smallest trophic level of a pyramid of energy.

Which two spheres contain most of earths water?

What is the name of a complex group of organisms that are connected and interact with one another?

Oceanic crust is composed mainly of basalt. continental crust is composed mainly of granite. why does oceanic crust generally tend to subduct under continental crust when plates collide

What is placebo and why is it used in some experiments

What is organ? a. group of different types of tissue that work together to perform a specific function or related functions. b. group of cells that work together to perform a similar function. c.