Jesse is walking on the sand at the beach one summer day. If heat is not flowing between her feet and the sand, which of the following must be true?
A. The sand is wet.
B. The sand is too cold for heat to flow.
C. The sand is the same temperature as her feet.
D. There is no friction between her feet and the sand,

Specialized cells which perform a particular function form : organisms organs tissues

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?