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Anon25 [30]
3 years ago
8

Complete the following statements to accurately describe examples of organisms affecting the Earth’s atmosphere, and subsequent

effects on other living organisms.
Starting around 2.7 billion years ago, photosynthesis by cyanobacteria, and later plants, pumped( Carbon dioxide, methane, O2) into the atmosphere. This caused the decline of anaerobic bacteria and allowed the rise and diversification of animals as seen in the (Cambrian, Carboniferous, Cretaceous) event around 500 million years ago.

Early vascular plants ( Captured, Released ) CO2 starting before the (Cambrian, Carboniferous, Cretaceous ) period that began around 350 million years ago, leading to lower temperatures and allowing the seed plants to outcompete seedless plants.

Modern human activity has raised (carbon dioxide, methane, oxygen) levels in the atmosphere to over(20%, 40%, 200ppm, 400ppm)., leading to higher temperatures, and contributing to extinctions of other specie
Biology
1 answer:
matrenka [14]3 years ago
8 0
Our, j’mealea oiu toava granega sesis.
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What is menopause, and why does it occur?
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The inheritance of eye color in Drosophila is controlled by genes on each of the fly's four chromosome pairs. One eye-color gene
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F1 Females  - all wild type

F1 Males  - all wild type

F2 Females  -  - all wild type

F2 Males - 1/2 wild type, 1/2 vermilion

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The wild-type allele (Xᵛ⁺) is dominant over vermilion (Xᵛ), which is a sex-linked trait.

Female flies have two X chromosomes, male flies have one X and one Y chromosome.

A homozygous wild-type female fly (Xᵛ⁺Xᵛ⁺) is mated with a vermilion male fly (XᵛY).

The female parent can only produce Xᵛ⁺ gametes.

The male parent can produce either Xᵛ or Y gametes.

When gametes from both parents fuse, the F1 offspring will have the genotypes Xᵛ⁺Xᵛ (females with wild type eyes) and Xᵛ⁺Y (males with wild type eyes).

The F1 females can produce Xᵛ⁺ and Xᵛ gametes. The F1 males can produce Xᵛ⁺ and Y gametes.

When the F1 individuals interbreed, the gametes combine to give rise to the F2 offspring. The possible combination of gametes that will give the different genotypes and phenotypes in the F2 are:

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