Answer:
The chlorophylls, a and b, are the pigments of photosynthesis. They are produced in chloroplasts in the photosynthetic tissues of the leaf. The chlorophyll molecules are very water repelling, partly because of the long phytol tail in the molecule.
Answer:
A
Explanation:
The end of the germinal period is marked by the implantation of the blastocyst in the wall of the uterus.
<span>A. free radical
</span>A substance continually produced in our cells that, over time, may cause damage to DNA and other important cell structures is known as a free radical.
NOT:
B. functional food
<span>C. direct additive </span>
<span>D. indirect additive</span>
On long flights, airplanes generally travel somewhere near the border of the <span>stratosphere and mesosphere.
</span><span>The stratosphere is very dry, with little watervapor and few clouds.
</span><span>One benefit of the stratosphere is that it shows very little temperature differences and the air density is very low, which means that jets and/or planes burn a lot less fuel resulting in further travel ranges. </span>
