Bulk flow refers to the movement of phloem sap from a source to a sink in plants.
<h3>What is Phloem?</h3>
This is a vascular tissue found in plants which helps to transport and distribution of the organic nutrients derived from photosynthesis.
Bulk flow occur when these nutrients present in the phloem sap are moved from source to sink.
Read more about Phloem here brainly.com/question/983997
Asthma is a condition which is characterized by
attacks of difficult breathing and wheezing.
<span>It is a condition related to lung disease in
which there is inflammation in bronchial tubes they become narrow, bronchial
tubes are the passageway through which air enters and leave the lungs. So when
it becomes narrow, it causes difficulty in breathing and sometimes it causes
severe attacks.</span>
6. pegmatitic (a pegmatite is a very coarse-grained intrusive igneous )
rock
7. shallow sea (limestone is the most common cemical sed rock, and they are most commonly in shallow marine environments)
8. sunlight (wind, water and ice are the primary mechanisms for the breakdown and transport of rocks and their erosional products)
9. addition of heat and pressure (heat through contact metamorphism with an igneous mass or by compression and deep burial, and pressure through tectonic forces)
10. a different metamorphic rock (this sounds like a trick question. The use of "additional pressure" implies that pressure has already been applied, in which case a metamorphic rock has already formed. Therefore, a "different metamorphic rock" will result)
11. stratification (strata are sedimentary layers)
12. sedimentary (a conglomerate)
13. extrusive (lavas have formed by "extrusion" from a volcanic edifice
14. organic (includes coal and limestone)
15. it will fizz in acid. (marble still is made up of calcium carbonate, which is the chemical which reacts with acid and fizzes)
Answer:
carbon-With four electrons that can be shared to make covalent bonds, carbon-based molecules display an enormous variety of size, shape, and properties.
Explanation:
