Which of the following statements best describes the Big Bang Theory? a. The Big Bang Theory describes the formation of the universe, which scientists believe happened 13.7 billion years ago. Under this theory, the universe began as a very hot, very dense point in space that began expanding outward. It still expands today.
b. The Big Bang Theory describes the formation of the solar system. The solar system was formed 13.7 billion years ago. It is still expanding today.
c. The Big Bang Theory describes the formation of the universe, which scientists believe happened 13.7 billion years ago. Under this theory, the universe began as a very hot, very dense point in space that exploded. It stopped expanding 1 billion years ago.
d. The Big Bang Theory describes the formation of the sun. The sun began as a very hot, very dense point in space that began expanding outward. It still expands today.

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.

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

How does human environment effect the biosphere