What do scientists estimate is the approximate age of the planet earth?

Deforestation kills many organisms that produce oxygen. What oxygen-producing organisms would remain if all the forests were destroyed? A. Rocks B. Humans C. Plankton D. Animals

Why does a plant have color

How do scientists know that the first organisms were simple, unicellular organisms

If an organism's diploid number is 12, what would be its haploid number? 3

Which of the following statements is true? Vitamins are classified as being soluble in either alcohol or fat. Biotin is a vitamin-like substance for humans. The first vitamin was discovered in 1960. Scientists think all vitamins have been discovered.

During a descriptive investigation, the main thing you are doing is O A) explaining results OB) making observations OC) designing a procedure OD) revising your hypothesis

Which of the following is true of a zygote? A. lt forms into a blastocyst C. It produces haploid male gametophytes D. It is made up of only one cell B. It is an unfertilized egg

2. Cheryl hears a new song on the radio every day during the week on her commute to work. Surprisingly, when the song comes on at a party on Saturday night, she knows most of the words without trying.

In your own words, write a definition for ecology

Which is NOT found in a DNA molecule? sugar water molecule phosphate molecule nitrogen-containing base