Which term applies to the biological aspect of a woodchuck living in underground burrows, eating plant food, and feeding often in open areas? a. niche b. productivity c. ecosystem d. energy flow

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.

True or false: the ribosome reads the sequence of codons in mrna.

Earth is tilted on its axis. which of these would not exist if earth had no tilt?