Based on the big bang theory, approximately how old is the universe? A. 14 billion years old B. 100 million years old C. 6000 years old D. 4.6 billion years old

Lancelets display how many of the four major characteristics of the phylum chordata? 1 2 3 4 next

A time machine transports you to the year 8,567 AD. You are surprised to learn that Homo sapiens have evolved into three distinct species. Explain how this might have occurred.

What is the significance of chitiin in arthropods

Chromosomes are lined up at the equator of the cell during this stage of mitosis. A. Prophase B. Anaphase C. Metaphase D. Telophase

Define fps system of units

What does this similarity at the molecular level in yeast and humans most likely indicate

Which of these activities is not considered to be a marine ecosystem threat? overfishing. ocean pollution. coastal development. ocean alkalinity?

What is another common intramuscular injection site for 2mL or less of a drug? a Ventrogluteal b. Vastus Lateralis c Deltoid d Infraspinatus

Which element acts as a hydrogen acceptor during aerobic respiration? (A) hydrogen (B) carbon (C) oxygen (D) nitrogen (E) phosphorus Can someone explain this one for me?

How do bacteria and viruses differ in the ways they affect cells in the body?