Which of the following scenarios would provide the best evidence that human traits are a result of lifestyle choices?

A.
Matt had been naturally right-handed since birth. In high school, he decided to start throwing left-handed after reading that there was a shortage of left-handed pitchers in the major leagues. Matt is now left-handed.
B.
Lisa and Anita are identical twin sisters. Lisa went grew up in New York; Anita grew up in Florida. Both sisters used to catch cold easily, but now, Lisa does not. Both sisters used to sunburn easily, but now, Anita does not.
C.
Tanya's mother has blonde hair. Tanya's father has black hair. Tanya's hair is brown.
D.
Arnold's parents and grandparents all have heart disease. Although Arnold has always exercised, avoided unhealthy foods, and followed doctor's instructions, he also has heart disease.

Chinese privet is a plant that is native to china. over 150 years ago, chinese privet was introduced to the united states as a fast-growing shrub that serves as an excellent privacy hedge. with no natural herbivore, chinese privet quickly established itself and spread in natural areas throughout the southeast and eastern seaboard of the united states. its dominance in these areas has jeopardized the survival of native plant species. chinese privet provides evidence that introducing non-native organisms can cause environmental damage integrated pest management strategies will not decrease chinese privet populations american gardeners can easily control the spread of chinese privet non-native plant species have type i survivorship curves

According to the cladogram, which organisms have roundworms as a common ancestor?

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.