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3 years ago

Burning fossil fuels increases the amount of

Biology

2 answers:

azamat3 years ago

4 0

Answer:

On Earth, human activities are changing the natural greenhouse. Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.

Explanation:

Brainliest when you can if you will please!!!!!

Ratling [72]3 years ago

4 0

Answer:

carbon dioxide

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URGENTUGSHAJIHUJNAHZBJNHBJNAKJZAK!!!!!!!!!!!!!! HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

bixtya [17]

$\huge \purple{\tt{Answer:}}$

B) Photosynthesis .

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3 years ago

A species of cactus has spines. How would biologists explain how a species of cactus with spines evolved from an ancestral cactu

sergejj [24]

Answer:

It needs the spines for protection

Explanation:

The cactus would develop the spines as a form of protection to protect itself from being consumed and to survive longer.

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3 years ago

n cattle, an autosomal mutation called Dexter produces calves with short stature and short limbs. Embryos that are homozygous fo

timofeeve [1]

Answer:

1 DDRR - Red, non-dexter

2 DDRr - Roan, non-dexter

2 DdRR - Red, dexter

4 DdRr - Roan, dexter

1 DDrr - white, non-dexter

2 Ddrr - white, dexter

Explanation:

Dexter is deleterious in homozygous condition, hence, phenotypes are heterozygous.

Roan are also heterozygous.

If dexter allele is represented by D, non dexter individuals will be DD dexter individuals will have the genotype Dd.

If colour in cattle is represented by R, red individuals will be RR, white will be rr, then roan colour will be Rr.

Hence, roan dexter cow and roan dexter bull will both have DdRr genotypes.

Crossing the two: DdRr x DdRr

Progeny:

1 DDRR - Red, non-dexter

2 DDRr - Roan, non-dexter

2 DdRR - Red, dexter

4 DdRr - Roan, dexter

1 DDrr - white, non-dexter

2 Ddrr - white, dexter

Others that are either aborted or stillbirths include:

1 ddRR

2 ddRr

1 ddrr

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3 years ago

What are mutations? I WILL GIVE BRAINLEST JUST HURRY

guajiro [1.7K]

mutation is the permanent alteration of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elementsit is of two types :- point mutation and frame shift mutation
point mutation - mutation only in a single base
frame shift - in the entire sequence or an entire set

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3 years ago

Que son las constelaciones

marissa [1.9K]

Son agrupaciones de estrellas reunidas bajo el mismo nombre. Estas estrellas reunidas bajo la misma región celeste forman aparentemente una figura.

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2 years ago