Evolution occurs when?

A) There is a change in genetic frequency

B) There is a change in the environment

C) A population has remained stable over a long period of time

D) New habitats and niches became open

What is the starchy material inside seeds that provides nutrients for the embryonic plant called?

Identify the two minerals shown that exhibit fracture as a dominant form of breakage

A stream with pH levels of 8.1 would be considered? A acidic B basic C neutral

How is the mantle different from the crust?

A transcription factor or sigma factor binds to DNA at the promoter. a. initiation b. elongation c. termination

The process by which organ systems maintain a relatively stable internal environment

Which cells in your body contain your entire DNA code? A) Nerve cells only B) Brain Cells Only C) All your cells

Which of the following is a scientific question

Terry has recently been diagnosed with an inherited form of depression. which of the flowing is the most likely cause or the depression? a. Terry has a mutation in the enzyme involved in NE synthesis b.

What makes water a polar molecule? Choose 1 answer: It has fully positive and negative charges. It contains ionic bonds. C) It is able to dissolve nonpolar substances. It contains partial positive and negative charges.