In which of the following can a change be directly observed A. alleles B. Genotypes C. Phenotypes D. Mutations

Outline one cost and one benefit of living in a group.

What is a example of hydrogen bonding between water molecules

In addition to light what are plants dependent on

Which example best illustrates the process of natural selection? a Giraffe necks varied in length and all offspring had an equal chance of survival. b Giraffe necks varied in length and the shorter neck giraffes were at a disadvantage.

Stem cells found in bone marrow are called: A. Pluripotent B. Multipotent C. Somatic D. Totipotent

What is the graphical representation of age structure known as? A. age group B. age graph C. age scale D. age pyramid

Anthony places a drop of water under a microscope and observed some small objects. He concludes that the small objects are cells. Which choice most likely describes the evidence that Anthony saw?

What is the bottom layer of skin? hypodermis epidermis dermis submit rewatch?

The division of cells following telophase is called?

How do matter and energy move differently through the biosphere