Which one of the following would result in an increase in the rate at which a population grows?
A. reduction in the birthrate
B. reduction in the number of females
C. reduction in the death rate
D. reduction in the number of males
C. reduction in the death rate
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Microbial species are collections of strains that share many stable properties in common but differ significantly from other strains.
Answer the following statement true (T) or false (F)
Which of the following would be true of an individual engaging in an intense weight-lifting program?
1.The number of myofibrils would increase.
2.The quantity of myoglobin would increase.
3.More capillaries would feed the muscle.
4.The number of mitochondria per muscle cell would increase.
Respond to statements 125–129 in reference to the five
endocrine glands listed below. a. adrenal cortex b. ovary c. pineal d. parathyroid e. thymus D 125. This gland controls circadian rhythms. D 126. This gland plays a central role in the immune response. D 127. This gland secretes a hormone that prepares and maintains the uterus for pregnancy. M 128. Progesterone is produced by this gland. M 129. Calcium concentration in the blood is controlled by this gland.
Four of the five animals listed below possess the
same type of skeleton. Select the exception. a. beetle b. snake c. bird d. human e. frog