Answer:
The immune system works like what happens when a prisoner is breaking out of their cell. The Cell Mediated Response in the immune system is when killer t-cells attack any cell that has a pathogen on it. In this analogy, the cell-mediated response is the orders given by the police officer.
Explanation:
Answer:
D) Bits being blown off a rock by heavy winds
Explanation:
All the other answer choices are examples of chemical weathering.
Rusting is chemical weathering.
Compounds that break down rocks is chemical weathering.
Acid rain is chemical weathering.
Wind breaking rocks, however, is physical weathering.
Because each carbon is identical, they all have four valence electrons, so they can easily bond with other carbon atoms to form long chains or rings. (Hoping that helps)
Answer:
The scream-y howl is most often heard during the breeding season, in the springtime. It is...horrible. A shrill, hoarse scream of anguish, it sounds more than anything like a human baby undergoing some kind of physical torture. It's thought that this call is used by vixens (female foxes) to lure male foxes to them for mating, though males have been found to make this sound occasionally as well.
Explanation:
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The number of covalent bond an element can form depends on the number of electrons it has in its outermost shell (valence electrons). Carbon has four valence electrons, therefore, it can form maximum of four covalent bonds in an organic compound.
