Part of a bird's digestive tract, called a gizzard, is able to break up large chunks of food at an extremely fast rate. it is difficult for scientists to watch a gizzard functioning in a live bird. how would building a model of a gizzard a scientist?

German cockroaches, bulging eyes, bu, are recessive to normal eyes, bu , and curved wings, cv, are recessive to straight wings, cv . both traits are encoded by autosomal genes that are linked. a cockroach has genotype bu bu cv cv, and the genes are in repulsion. which set of genes will be found in the most common gametes produced by this cockroach?

According to piaget, children have acquired the cognitive skill of conservation when they're able to a. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal. b. understand the viewpoint of other people. c. relate objects around them to their own needs. d. realize that the term heavy describes an object one way and the term big describes it another way. it is not b nor c. did this 2 x wrong..

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above