Biology, 09.03.2020 10:31, kaylamorris05
The visible clouds on Jupiter and Saturn are made of , while the clouds of Neptune are made of .
methane, ammonia
hydrogen, carbon dioxide
carbon dioxide, water
ammonia, methane
Answers: 2
Biology, 22.06.2019 02:00, ligittiger12806
Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form
Answers: 2
Biology, 22.06.2019 03:30, gaby6951
Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.
Answers: 2
Biology, 22.06.2019 06:30, ktown9
Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?
Answers: 3
The visible clouds on Jupiter and Saturn are made of , while the clouds of Neptune are made of .
Mathematics, 11.03.2021 04:20
Mathematics, 11.03.2021 04:20
Biology, 11.03.2021 04:20
Mathematics, 11.03.2021 04:20
Mathematics, 11.03.2021 04:20
Mathematics, 11.03.2021 04:20