There are 669 purple flowers and 221 white flowers. What is the ratio of purple flowers to white flowers?

Consider four species of conifers. species a and b are sister species. species c and d are also sister species. the clade containing species a and b is a sister to the clade containing species c and d.

Draw, label, a food web

Which type of cell has the potential to develop into any type of cell

Which is an example of an organism that grows and develops through numerous mitotic divisions? A. cow B. amoeba C. bacterium D. paramecium

Of all of the amino acids only 9 are essential and can only be found in protein supplements true or flase

A 17 yr. old boy was on a weekend camping trip, was taken to a local emergency department 3 days after he returned.

To be useful in a science, a hypothesis must be ...

What part of the brain controls emotions?

What is the most important genetic factor influencing whether someone will develop osteoporosis? A. Age B. Exercise C. Gender D. Diet

Which of the following is a disadvantage of sexual reproduction? A. Most species that reproduce sexually are unable to adapt. B. Most species that reproduce sexually require a mate. C. Most sexually-reproducing organisms reproduce too quickly. D.