Why is it that no scientist can answer why everything happens or why it happens the way it happens?

What things could cause an increase in a population? (Choose ALL of the correct answers.) Immigration Emigration Increased birth rate Increased death rate A decrease in limiting factors

One hypothesis in the barn-swallow study was that long-tailed swallows would produce more offspring than average-tailed swallows.

What forms the channels in the phospholipid bilayer? A) Hydrophilic Heads B) Proteins C) Carbohydrates D) Lipids The question had no answer labels, to I put them on myself.

Somatic cells are cancer cells. cells that become tumors. cells that become eggs. cells that become sperm. cells that do not become reproductive cells.

Marla dabs a small dot of red lipstick on 20-month-old lia's nose. when put in front of a mirror, lia touches her nose, indicating the development of

What is the result of meiosis I and are the chromosomes replicated or unreplicated?

Imagine that a species has eight chromosomes (four homologous pairs). if some event occurred that prevented meiosis from occurring after replication, how many chromosomes would this species have after two generations?

What are some similarities between prokaryotic and eukaryotic cells?

How are the circulatory systems in animals and plants alike? A. All plants and animals have a heart. B. Their circulatory systems move blood throughout the organism. C. Their circulatory systems transport nutrients to cells. D.

A cation is an atom that has gained electrons true or false