One of the most abiotic factor that may affect humans directly is waster availability because with out water we can get dehydrated and die.
The controlled experiments are performed by the scientists, when they want to study the changes in the sample on changing a single variable. So, the correct answer is option (b).
In case, all variables are kept same, no changes would be observed in the experiment sample. A controlled experiment can be performed on living thing as well as non living. But, controlled experiment cannot be performed on the things which are influenced by a lot of variables, as they cannot create realistic results. So, the option (a), (c), and (d) are incorrect.
Answer;
-Large polar molecule are list likely to cross the phospholipid bilayer.
Explanation;
-A large polar molecule would be the least likely to passively diffuse through a plasma membrane without the help of a transport protein. Both its size and the hydrophobic interior of the membrane would restrict it.
-Only small uncharged molecules can diffuse freely through phospholipid bilayers. Small nonpolar molecules, such as O2 and CO2, are soluble in the lipid bilayer and therefore can readily cross cell membranes.
-Ions and large polar molecules cannot pass through the lipid bilayer. But more specifically, whether a molecule can pass through the membrane depends on its size and its electrical nature.
passive: doesn't require energy, from high to low concentration
active:requires energy, from low to high concentration
i dont know maybe
Answer:
The set of prescribed behaviors that are associated with a particular social position.
Explanation:
A role in a society is a behavior that we do as part of our position that we have in that society. There are many roles that we do on a daily basis. These can be gender roles, parental roles, the roles we do at a given job position, and many others. We all know the role of a firefighter because we know what to expect from that role in society.
