Biotic factors are the?

Which of saturns moons rains hydrocarbons to form liquid methane and ethane lakes

A patient presents with low copper. which portion of cellular respiration would suffer?

Which is the present geological Era

What will occur when the north pole of one bar magnet is moved near the north pole of another bar magnet? A.) The ends will attract one another. B.) The ends will repel each other. C.) One north pole will switch and become a South pole. D.

Why are invasive species dangerous to the environment? They pollute the environment. They are always predators. They threaten biodiversity. They bring abiotic factors.

Some insects can glide across the surface of water due to water's:

Which statement describes the area swept out by a line between a planet and the sun at equal times as the planet moves along its orbit? It changes shape but always remains constant. It is proportional to the distance between the sun and the planet.

Chlorine phosphorus sodium and zinc are examples of

What makes ribosomal RNA useful as a molecular clock? A - A large portion of the DNA ring is not vital to structure or function, allowing it to accumulate neutral mutations.

What does natural selection mean?