Mucus in our noses and respiratory tracts trap microbes and pathogens from entering our body. Wax also trap pathogens and other foreign particles from entering our ears. Non-specific defenses are surface coverage defenses. T-cells target specific pathogens, which is a type of specific defense acted upon by our immune system.
Answer:
1 m/s²
Explanation:
Kg is the unit of mass and Kg.m/s² is the unit of force.
Kg.m/s² is equal to Newton.
Kg.m/s² = N
The given expression is shows that force is divided by mas which means that the resultant value will be acceleration.
Because,
Acceleration can also be determine through following formula,
F = m × a
a = F/ m
Thus,
1 Kg.m/s² / 1 Kg
1 m/s² .
Acceleration will be 1 m/s².
<u>Answer</u>: B) the mass extinction of the dinosaurs 66 millions years ago
Macroevolution is a term used to define changes of whole taxonomic groups over long periods of time. The extinction of the dinosaur is not an example of this evolutionary process. The changes occurred over a relatively short period of time and did not involve changes in a taxonomic group, but rather their extinction.
After the G2 phase, the cell goes thru another growth period. The cell will gather energy in order to prep for whats coming: Mitosis. The first phase of mitosis is Prophase. During Prophase, the chromatin fibers condense and shorten to chromosomes that can now be seen with aid from a light microscope. Microtubules also appear and prepare to hold sister chromatic im correct alignment for separation. Metaphase is the second phase. Microtubules align sister chromatids at the exact center of the mitotic spindle aka metaphase plate. The following step is Anaphase. The centromeres split, separating the 2 identical sister chromatids. Once the chromatids are separated, they are called chromosomes. Telophase comes after anaphase. It is the final stage of mitosis. The identical sets of chromosomes are now at opposite sides of the cell. The nuclear envelope now re-forms around each mass of chromosomes, nuclei reappear within each nucleus. After these phases, Cytokenisis occurs. This is the division of the cell's cytoplasm and organelles into 2 cells. A cleavage furrow is formed during Anaphase.
The correct answer would be: The up-and-down motion of the tongue when sucking.
I hope that helped! c: