Answer:
D
Explanation:
This would assist in proving there were ice ages because it shows that cold adapted animals were living before, in what is now warm environments.
D. fingernails
Skin, hair, and vertebrae are all the outer layer of the body and protect the body. The fingernails aren't part of that.
Answer<em>: In a plant cell, chloroplast makes sugar during the process of photosynthesis converting light energy into chemical energy stored in glucose.</em>
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A muscle stimulated<span> at high-frequency with some short relaxation time between ... smooth </span>muscle cells<span>... voluntary via axonal endings of the somatic </span>nervous<span> system .... </span>Which of the following<span> does NOT occur during skeletal </span>muscle contraction<span>? .... </span>true<span>. the space between he neuron and the </span>muscle<span> is the</span>axon<span> terminal. false.</span>
Answer:
<h2>1. unconditioned stimulus, </h2><h2>2. loud noise</h2>
Explanation:
Such type of stimulus that is trigger by the neutral in nature is called a conditioned stimulus such as the sound of the bell and some other. Such type of stimulus that is biologically potent is called an unconditional stimulus such as the taste of food and some other things. When the biologically effective stimulus is used with neutral stimulus then the classical conditions are formed that are used in the learning process.
