Answer:
B- environmental factors do most of the “selecting.”
Explanation:
Natural selection is the environment that the organism lives in, and the process which that organism changes by.
Artificial selection is when humans intervene and create an organism that isn't suited for their specific environment, but rather for the humans own liking.
Think of breeding dogs to be smaller, or more fluffy and adorable. These are not traits to help them survive in where they original environment was.
I think it's the evaporation of water through the stomata :)
Scientists and biologists study the world using experimentation. This can be done through observation, or by performing scientific tests in a lab.
Ans.
Steroids are defined as active organic bio-molecules, having four rings with a specific molecular configuration. Steroids play role in two major functions: as hormones or signaling molecules and as structural components of plasma membrane.
Examples of steroid hormones are estrogen, progesterone, and cortisol. Thus, the correct answer is 'option b). they serve as chemical messengers.'
<span>Diminished breath sounds actually imply a reduction
or lack of air movement. In this case, anterior and posteriorsymmetric chest expansion should be examined to evaluate and compare
lung function. Tactile fremituspalpation, percussion, and voice sounds
auscultation should also be conducted because these tests reveal the density of
underlying tissue.</span>
