Answer:B). Cell membranes are composed of a lipid bilayer.
Explanation: A membrane is a lipid bilayer that surrounds the cell. Lipids have two parts: the fatty acid chain (the tail) and the phosphate group (the head).
The phosphate head groups are polar, face outward and interact with the outside environment of the cell. The fatty acid chain is hydrophobic and nonpolar, face each other in the bilayer thus forming a hydrophobic fluid interior.
The hydrophobic nature of the bilayer interior makes the membrane to permit only nonpolar and hydrophobic molecules to pass through the cell membrane. This is the reason the membrane allows only molecules that dissolve in the lipid bilayer to pass through to enter or leave the cell.
Some causes could be the mother smoking, drinking, doing drugs etc. Or even simply her body doesn’t fully accept the baby growing inside her so it acts out against it. Sounds strange but it happens. Also if the mother is sick with Zika or another virus, it can harm the baby’s growth.
Global warming is an issue to organisms or species because not all animals can adapt so certain living conditions. high human population growth rate drive further extinctions of plants and animals because humans need space to live so we cut down their habitats and they die. not all animals can adapt to certain living conditions.
Answer:
B. Food was a limiting factor.
C. As long as Ling keeps adding more food, the guppy population will continue to grow
Explanation:
Limiting factor refers to biotic or abiotic factors that limit or affects the growth of species. In the population of guppies, food was a limiting factor that affects their population growth. Indeed!, it is vivid from the experiment that after Ling increases the amount of food being given to the guppies, there is a significant increase in the population growth.
We can thereby conclude that the following statements that supported these data goes thus;
Food was a limiting factor and as long as Ling keeps adding more food, the guppy population will continue to grow.
The shape of a molecule is affected by the arrangement of electrons, but does not describe that arrangement. The “shape” of a molecule is how the outside atoms are arranged around the central atom. The lone pairs of electrons affect this arrangement, but are not part of it.
