The cartilage on the ends of wendell's joints is deteriorating. around age 65, he developed bony lumps on the end of the joints on his fingers. recently, he has been experiencing joint pain, swelling, and some loss of flexibility. wendell probably has

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

Why are human population trends difficult to predict?