Describe two adaptations of the saguaro cactus for water conservation

Cellular respiration in the presence of oxygen is called

What did Charles Darwin mean when he stated that some organisms were 'more fit' than other organisms? A) some organisms were heavier and stronger B) some organisms were more likely to reproduce C) not all organisms had the same natural life span D)

Population contains short and tall plants. the short not able to compete with tall plants for sunlight. The ones are more susceptible to wind damage. Which tyoe of selection are the plant experiencing.

Which element do proteins, lipids, and carbohydrates have in common?

Was phenylthiourea a competitive inhibitor or a noncompetitive inhibitor?

Which of the following is NOT a way that science influences society? Science advances technology that is useful to society. Science gives society answers to difficult ethical issues. Science provides answers to some of society's practical problems.

Name one reason scientists believe that all life envolved from a single common ancestor

11. what are threats to biodiversity? (at least three examples)

What are cells called that do not have a specific job yet

Which of the following contains the greatest number of unipotent stem cells? A. 6-week-old embryo B. Blastocyst C. Adult D. 3-day-old embryo