The Arctic tundra has extremely cold winter temperatures and short winter days. In contrast, summer days are long and moderately warm. Small cushion plants, blueberries, birch, and willow, which grow in a thin layer of soil atop permanently frozen soils, form the base of the food chain. Lichens are also abundant on the tundra. The plants and lichens are eaten by caribou, pika, moose, and grizzly bear. Grizzly bears also eat the caribou, pika, and moose. Which items are part of the Arctic tundra ecological community

The list of items are as follows:

day length,

tundra plants, including blueberries and birch

caribou and grizzly bear

soil depth

lichens

air temperature

The correct answer is - tundra plants, including blueberries and birch, caribou and grizzly bear, and lichens.

Explanation:

The arctic tundra is known for its extremely cold winter temperatures, high latitude/northern hemisphere, little precipitation. Vegetation in here is permafrost, birch, blueberries, lichens, and mosses, migrating mammals such as grizzly bears and caribou, and residing herbivores.

Various biotic and abiotic factors interact in this ecological community one another and on the basis of the given information the items which are part of the arctic tundra ecological community are-

tundra plants, including blueberries and birch, caribou and grizzly bear, and lichens.

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."

1. is geographic distribution

2 is increasing complexity

3 is transitional forms