Which of these are examples of the effects of rising temperatures?
a. marmots are coming out of hibernation later in the year
b. plants are blooming earlier in the year
c. animals that were traditionally only found in temperate areas are being found in tropical zones
d. maple trees are making more syrup than ever before
e. all of the above
Answer: b. plants are blooming earlier in the year
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Which statement characterizes human population growth?
a. The rate of human population growth appears to be declining. b. The rate of human population growth appears to be increasing. c. The rate of human population growth is exponential. d. Human birth rates are higher than death rates. e. Human death rates are higher than birth rates.
Children born with ____________________ have genital structures that are neither fully male nor fully female Fill in the blank(s) with the appropriate word(s)
Barry Marshall and his collaborators showed that
A) lifestyle factors such as stress, diet, and smoking cause chronic gastritis and stomach ulcers. B) lab animals are easily infected by Helicobacter pylori. C) Helicobacter pylori bacteria are protective against peptic ulcers. D) Helicobacter pylori bacteria cause chronic gastritis and stomach ulcers.
Some photosynthetic aquatic bacteria produce gas vacuoles that lack a lipid-bound membrane in order to regulate their buoyancy.
Answer the following statement true (T) or false (F)