Answer:
A. sharing electrons
Explanation:
A covalent bond consists of the simultaneous attraction of two nuclei for one or more pairs of electrons.
Within 24 hours after fertilization, the egg that will become your baby rapidly divides into many cells. By the eighth week of pregnancy, your baby will change names from an embryo to a fetus.
Drinking alcohol, especially in the first 3 months of pregnancy, increases the risk of miscarriage, premature birth and your baby having a low birthweight. Drinking after the first 3 months of your pregnancy could affect your baby after they're born.
5 months, your baby's birth weight may have doubled. Babies continue to gain about 1¼ pounds (560 grams) this month and about 0.8 inches (2 centimeters) in length.
The answer is B because it’s the only one that makes sense with what the question is asking.
Answer:
c. capillary
Explanation:
Capillary -
Capillaries are the small blood vessels with diameter of 5 to 10 micrometres .
In the body , the capillary are the smallest blood vessels .
The main function of capillaries is to exchange substance along with the interstitial fluids .
Substance like , water , glucose , oxygen carbon dioxide , nutrients etc .
Hence , from the information from the question , the answer is capillaries .
Answer:
The best answer to the question: Explain the reason for this functional difference, would be: that both movements seek to propel mucus and debris, those who enter through the nasal cavity and the nasopharynx, and the mucus that is produced by the respiratory tract as a defense mechanism against debris that might have entered the tract, towards the esophagus, for expulsion from the body.
Explanation:
The air that we breathe does not simply carry gases that we use for survival; it also carries in it debris, dust particles and microorganisms that may enter the body through it and cause damage to the respiratory tract. In order to protect us from that, our bodies, and especially our upper and lower airways count with a series of protective mechanisms. One of those mechanisms is the production of mucus, both in the upper and lower airways, that traps these unwanted invaders and prevents them from reaching the sensitive and vulnerable lungs. However, this mucus needs to be moved, and for that, the airways count with cilia, brush-like extensions that propel the mucus and the debris, microorganisms and dust, that might have been caught in it, so that they can be expelled. While in the nasal cavity and nasopharynx the need is for this mucus and its passangers to reach the esophagus below, the movement will be downwards, while, those in the respiratory tract, need the mucus to reach the esophagus, whose opening lies superiorly; therefore, the cilia here will propel the mucus upwards, and towards the esophagus.
