Bees use nectar from the flowers of plants as food. as they collect nectar, dustlike pollen grains stick to their body. when they move from flower to flower, pollen is transferred to other flowers. the pollen from other flowers the plant make seeds. which challenge of life does the plant the bee meet? a. acquiring energy b. reproduction c. maintaining its structure d. homeostasis

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6