Which of the following statements about tundras and boreal forests is correct?
(a) Both are characterized by slow plant growth, so there is little accumulation of organic matter.
(b) Tundras are warmer than boreal forests.
(c ) Boreal forests have shorter growing seasons than tundras.
(d) Plant growth in both biomes is limited by precipitation.
(e) Boreal forests have larger dominant plant growth forms than tundras.