Why is competition for biotic resources a key factor in the success of an organisms or a population in an ecosystem

Unlike Venus and Mars, Earth's atmosphere is primarily composed of oxygen and nitrogen. Why is the composition of Earth's atmosphere different from the composition of the atmospheres of Venus and Mars? A. Earth has life, while Venus and Mars do not.

True or False? Many eukaryotes live in harsh environments, such as hot springs

How many factors should a well-designed experiment test at one time? A. 1 B. 2 C. 3 D. depends on the number of experiment variables

What does Greta mean when she says "Our house is on fire"? This is speak that Greta talk about climate change

A recurrent and more serious form of heartburn, also known as acid reflux, is called

How might cancer stem cells originate?

What discovery do the animals make a few days after the executions?

Name three of the cultural areas scientists refer to when discussing native americans

A nurse informs a woman that there is nothing more that can be done medically for her premature infant who is expected to die. the mother suppresses her grief and tells the nurse she is experiencing heart palpitations.

Rough endoplasmic reticulum definition and function