Spirogyra are green algae that can reproduce sexually. Which of the following is true only of a sexually-reproducing organism such as Spirogyra?
a. The cells of parent algae have nuclei.
b. Each offspring contains chloroplasts.
c. Several offspring may be produced at once.
d. Genetic material is contributed by two parent cells.

Why does the skin of your finger shrink when you wash clothes for a long time?

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

Anurse is preparing to administer ampicillin 500 mg in 50 ml of dextrose 5% in water (d5w) to infuse over 15 min. the drop factor of the manual iv tubing is 10 gtt/ml. the nurse should set the manual iv infusion to deliver how many gtt/min? (round the answer to the nearest whole number. use a leading zero if it applies. do not use a trailing zero.)