Answer:
The answers that apply;
Researchers found cosmic microwave background radiation, which is a heat imprint left over from the big bang.
A redshift of light emitted by stars and galaxies indicates the universe is expanding
A primordial form of helium gas was found by the Endeavor space shuttle
Big Bang theory is a theory that endeavors to explain the origin of the universe. It stipulates that the universe exploded from a singularity and continues to expand today
Explanation:
Hope it helps:)
In general terms, “sex” refers to the biological differences between males and females, such as the genitalia and genetic differences. “Gender” is more difficult to define, but it can refer to the role of a male or female in society, known as a gender role, or an individual's concept of themselves, or gender identity.
An ecological niche is an organism's specific habitat in an ecosystem.
It is where it lives and feeds, etc.
Answer:
example of active transport is the sodium-potassium pump, which moves sodium ions to the outside of the cell and potassium ions to the inside of the cell.
