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son4ous [18]
3 years ago
7

PLEASE HELP ME, I REALLY NEED THIS ANSWERS NOW!!!!! WORTH 130

Biology
2 answers:
xz_007 [3.2K]3 years ago
8 0
1. gold

2. 48 pounds of carbon dioxide is added to the atmosphere per year. atmospheric oxygen levels decrease.
aev [14]3 years ago
6 0

Answer: 1)  Eurasian water millfoil

               2) Gold

                3) A

Explanation:

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State whether the following sentences are simple, complex or compound.​
sleet_krkn [62]

Answer:

ok

Explanation:

Simple sentences contains on independent clauses ,also called main clause ,that stands alone.

Complex sentences contains an independent clauses plus one or more dependent clause.

Compound Sentences contains two independent clauses joined with the coordinating conjugation and comma .AND IT'S ENGLISH QUESTION NOT OF BIOLOGY.

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What is the howler monkeys biome
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Where is a place where two geologic units meet
stiks02 [169]
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Each biological species is genetically isolated from other species. why do the species evolve independently?
Nookie1986 [14]
Species evolve independently possibly due to geographical isolations or behavioural isolations.

Geographical isolation includes the isolation of 2 groups of the same species. Since these 2 groups live in different locations, (e.g. a volcanic eruption resulting in a barrier between one side of an ocean and another side of the ocean), they will have different selection pressures in their different environments as well (e.g. one side of the ocean may have more sunlight and thus more underwater plantations than the other side of the ocean). Natural selection will eliminate those with disadvantageous characteristics (e.g. Fishes that only eat plants and nothing else on the side of the ocean with little plantations) with unfavourable alleles, and select for those with advantageous characteristics (e.g. Fishes are able to eat plants and other organic substances as well on the side of the ocean with little plantations) with favourable alleles.

Since the 2 groups have different selection pressures, natural selection will occur in different ways, selecting for and against different types of fishes with different types of alleles. Also, because of the barrier, they are not able to mate with each other, and there are no mixing of genes from one side of the ocean and the other side. They are genetically isolated. As genetic drift occurs over time, their gene pools become different from each other. Thus, they evolve independently.

Hope this helps! :)
7 0
3 years ago
During mating season, male sheep produce hormones that make them aggressive. This is an _____ effect.
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The answer would be Activational <span />
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