Mr. potter’s physical science classes conducted an experiment to determine the density of aluminum. here are the density values each class period came up with: 1st hour = 3.1 g/ml, 2nd hour = 3.05 g/ml, 3rd hour = 1.9 g/ml, 4th hour = 2.35 g/ml, 5th hour = 4.2 g/ml, and 6th hour = 4.0 g/ml. if aluminum’s true density is 2.7 g/ml, how would you group the class values based on accuracy? a. group: 1st, 3rd, 5th, and 6th hours, with one recorded decimal place in their values group: 2nd and 4th hours, with two recorded decimal places in their values b. group: 3rd and 4th hours, with values under the true density group: 1st, 2nd, 5th, and 6th hours, with values over the true density c. group: 3rd hour, with a 1 value group: 4th hour, with a 2 value group: 1st and 2nd hours, with 3 values group: 5th and 6th hours, with 4 values d. group all classes as accurate

Use the drop-down menu to complete the statement. an electron in the first energy level of the electron cloud has an electron in the third energy level.a. a lower energy thanb. a higher energy thanc. the same energy as

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

In a hypothetical breed of dogs, coat color is controlled by two genes. there are six different coat colors in this breed: black, brown, cream, gray, silver, and tan. consider the following crosses.cross 1: black females from a lineage of all black dogs are crossed with brown males from a lineage of all brown dogs. f1 males and females are all black. when f1 are intercrossed, f2 males and females are black or brown.cross 2: black females from a lineage of all black dogs are crossed with tan males from a lineage where all males are tan and all females are cream. f1 males are black, f1 females are gray. when f1 are intercrossed, f2 males and females are black, brown, gray, or tan.cross 3: silver females from a lineage where all females are silver and all males are gray are crossed with brown males from a lineage of all brown dogs. f1 males and females are all gray. when f1 are intercrossed, f2 males are black, brown, gray, or tan, f2 females are cream, gray, silver, or tan.select the correct statements regarding the mode of inheritance of the coat color genes.a) both genes are x-linked.b) both genes are autosomal.c) one of the genes modifies the expression of the other gene.d) each gene has an additive effect on the intensity of coat color.e) each gene independently specifies three colors.f) one of the genes is autosomal, and the other is x-linked.