The answer is the first one A
An atom of sodium has 11 protons, 11 electrons, and 11 neutrons.
Deficiency of calcium in plants causes reduced internode length and crinkled leaves.
Initial signs of calcium Deficiency include localized tissue necrosis that stunts plant growth and causes young leaves to curl or have necrotic leaf margins, and terminal buds and root tips to eventually die. New growth and tissues that are expanding quickly on the plant are typically the first to be harmed.
- These include boron, copper, iron, manganese, molybdenum and zinc. Most nutrient deficiencies are caused by a lack of nutrient content in the growing medium or nutrient solution
- Plants require calcium in order to develop new growth points and root tips. Symptoms of a deficiency include decreased growth in new leaf, buds, and roots. Younger leaves curl downward and develop tip burn, which is the browning of the leaf edges and tips.
To learn more about Deficiency visit : brainly.com/question/11210248
#SPJ4
Cells get energy for their functioning through sunlight and other organic food molecules. ATP is a good example of energy pathways through photosynthesis.
During volcanic eruptions, some of those that is emitted by the volcano are water vapors. With the proper conditions, these water vapors then condense. The precipitation of water vapors from volcanic eruption about 3-4 billion years ago became the origin of the seas.