What makes the squid so well equipped to swim fast in the water (i need at least 2 reasons)

Because of their well-known propulsion by pressing water from the pallial cavity. As well as catching prey. Without their instinct to move fast to catch the organism, they would not move at the speed that they do.
I hope this helps! :)

Squids can swim so fast because of their technique. Because of their anatomy, they are able to take in large amounts of water and push it out with so much force that it propels them forward. Humans are not able to take in large amounts of water while underwater, therefore we have to rely solely on our limbs. Another reason is the number of fins they have! While the majority of fish have only two fins, one on each side, squids have 8 fins, specifically called tentacles. That's four times the amount of force! Hope this helps!

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.

The formula is (nh4)2co3