the other answer is wrong its d
Answer:
2.447 × 10⁴ years
Explanation:
Step 1: Given data
- Half-life of the radioactive atom (t1/2): 3,500 years
- Parent-daughter ratio ([A]/[A]₀): 1:127 (1/127)
Step 2: Calculate the rate constant
Radioactive decay follows first-order kinetics. We can calculate the rate constant (k) using the following equation.
k = ln2 / (t1/2) = ln2 / 3,500 y = 1.980 × 10⁻⁴ y⁻¹
Step 3: Calculate the time elapsed (t)
For first-order kinetics, we will use the following expression.
ln ([A]/[A]₀) = -k × t
t = ln ([A]/[A]₀)/ (-k)
t = ln (1/127) / (1.980 × 10⁻⁴ y⁻¹) = 2.447 × 10⁴ y
Answer:
It will cause him to get sick with corno and also he will affected most people that he sees or touch but the vaccine helps prevent that.
Explanation:
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During embryonic development, if the anus develops before the mouth, the orgaism is a deuterostome.
The list of items are as follows:
day length,
tundra plants, including blueberries and birch
caribou and grizzly bear
soil depth
lichens
air temperature
Answer:
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.
