Answer:
People <u>do need</u> a pump to push the water to the surface from confined aquifers.
* Hopefully this helps:) Mark me the brainliet:)!!
Answer:
Option C should be correct one.
Explanation:
Negative mutations linger longer in asexual organisms. ...
Diversity is limited. ...
Population numbers can be difficult to control. ...
There can be an inability to adapt. ...
Overcrowding can be a real issue. ...
Reproduction can create competition.
Answer:
a. a set of proteins involved in innate but not acquired immunity.
Explanation:
The complement system are a set of proteins or protein fragments that play a major role in the innate immune system. The complement system is involved in the defense of the body from foreign pathogen through specific plasma proteins that participate in leukocyte activation, chemotaxis and opsonization. In other words, they increase the ability of phagocytes and antibodies to mop up damaged cells and foreign microorganism, activate inflammation process.
Some of these proteins include complement component 3 (C3), complement component 9 (C9) and C1Q complex.
Hello!
A polar molecule is where one of the atoms in a molecule has a slight positive charge, and another has a slight negative charge, due to the unequal sharing of electrons.
Water is one of these molecules - the electrons spend more time around the oxygen atom in the center, and less around the hydrogens, so the hydrogen atoms have a slight positive charge, and the oxygen a slight negative.
Therefore, your answer is B, water has a slight negative and a slight positive charge at opposite poles.
Hope this helps!
