Answer:
2. It carries water from the roots to the leaves.
Explanation:
Phloem is the vascular tissue in charge of transporting and distributing organic nutrients.
Answer:
In another form but along the same path of reflection the other sciences have proceeded.
Enzymes serve to speed up reactions by lowering the energy of activation, the amount of energy needed to begin a reaction.
Answer: <u>Option B; photosynthesis</u>
Explanation: Carbon is present in the atmosphere in gaseous form as carbon dioxide majorly. And, only plants can take up CO2 and use it to make glucose. This reaction takes place through photosynthesis, taking place in the leaves of the plants. Rest activities mentioned in option A, C and D, these all release CO2 into the atmosphere.
Answer: B) Tuna that feed on smaller fish that feed on krill that feed on algae
Explanation:
Methyl Mercury is a persistent substance which is not easily biodegradable, when released to the water body it is ingested, and can build up in living organisms, or bioaccumulate.
This build up in living organisms, inflicts a spiraling levels of harm as the food chain ascends, for example on higher order species such as predatory fish and fish eating birds and mammals — through a process know as "biomagnification".
The most affected is the species highest in the order. The tuna fish eats smaller fishes and is therefore most affected through biomagnification of mercury bioaccumulated food it ate.
Thus the Tuna fish have the highest levels of methylmercury, and therefore feels the severest effect.
