The answer that best fits the blank provided above is C3a and C5a. Mast cells release this so called histamines once they are exposed to C3a and C5a which are fragments of complement proteins. These are also called as <span>Anaphylatoxins along with C4a. Hope this helps.</span>
Answer:
<em>PROS: </em>
<em>1. They are cheaper</em>
<em>2. They contain more nutrients</em>
<em>3. Grown with fewer pesticides</em>
<em>4. Resistant to insects</em>
<em>5. Tolerance to heat, cold, and drought</em>
<em>CONS:</em>
<em>1. May cause allergic reactions</em>
<em>2. Will make you resistant to antibodies</em>
<em>3. Cross pollination</em>
<em>4. GMO's can create a super bug, one which is able to go past the crop's resistance on insects. Making a devastating blow on crops that have no insect resistance</em>
<em>5. They have been linked to cancer</em>
The answer is microscopic life appeared on Earth before flowering plants. This is because according to the label on the second box, microscopic life appeared 4.0 to 3.5 billion years ago, and this is way before the date 250 to 120 millions years ago indicated on the label on the sixth box the flowering plants appeared on Earth.
<span>1) Malthus</span> Hutton influenced darwins idea
4) <span>4. Darwin concluded that if humans could influence an offspring's traits, so could nature.</span>
Answer:
Water, fresher climate, not only scientific factors but also a psychological factor (nice beaches, palms, other wildlife, etc.)
