Please help me I will give you the brain thing and extra points. image below Which of the following trends can be observed when moving down a column in the Periodic Table?

Question 1 options:

The atomic mass decreases.

The number of valence electrons remains the same.

The number of orbitals decreases.

The possible number of bonds formed decreases.

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite