Answer:
The strong hydrogen bonds in water made water stable and difficult to breakdown into constituent oxygen and hydrogen atoms. at a temprature less than 100 degree..
Oxygen is a strong electronegative atom than the two hydrogen atoms it is attached to in water. It pulls more electrons to itself than the hydrogen atoms.. This strengthened hydrogen bonds in water .
Consequently, it will be difficult for the needed oxygen atoms to simply diffuse into the alveoli to reach the blood,Compare to its molecular form where its atoms awere held by relatively week covalent bonds.
Besides the porosity of the thin alveolar endothelial walls of 0.2 micrometer is too small for the larger water molecules to pass through.
Explanation:
Answer: It should be D.
Explanation
Facilitated- requires energy- large molecules require energy to go cross the phospholipid bilayer.
PCR is a laboratory technique used to make multiple copies of a segment of DNA. PCR is very precise and can be used to amplify, or copy, a specific DNA target from a mixture of DNA molecules.
Answer:
The correct answer is e. secondary and tertiary consumers
Explanation:
In the given food chain pepper plants are the producer which are consumed by snails and grasshoppers so grasshoppers and snails are primary consumers. Spiders are secondary consumers as they eat primary consumers like grasshoppers.
Shrew eat animals that are primary and secondary consumers like snail and spiders so when shrew eat primary consumers it becomes secondary consumer and when it eats secondary consume like spiders than shrew becomes a tertiary consumer.
Therefore the shrew occupies the trophic level of secondary and tertiary consumers.
