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miv72 [106K]
3 years ago
15

Sciencists thing past changes in climate have been caused by____.

Biology
1 answer:
AVprozaik [17]3 years ago
6 0

I’m pretty sure the answer is greenhouse gases.

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Which of the following characteristics does an arthropod have?
Natalija [7]

-Presence of jointed appendages and gills, lungs, jaws.
-Presence of a chitinous external skeleton or exoskeleton that change periodically.
-Body constituted by repetitive segments, phenomenon known as metamerism<span>.</span>

<span>I hope this help,</span>

<span>                       Sebastian Goicoechea.</span>

6 0
3 years ago
In a balanced ecosystem, the number of consumer is?
vova2212 [387]
The number of producers is greater then the number of consumers , primary consumers is greater then the number of secondary consumers and the secondary consumers is greater then the number of tertiary consumer
4 0
3 years ago
A species of fly has two alleles for the length of their legs. The allele for long
Artyom0805 [142]
The answer is A. 0.54.

In a population p+q=1 (we have 2 alleles only).

The question states that 0.21 of the population(21%) have short legs meaning they are q^2.

So q=rad0.21=0.4582.

And p=1-q=0.5417.
3 0
3 years ago
Read 2 more answers
Tay-Sachs, which is a recessive lethal disease, results only when individuals possess two copies of the disease-causing allele.
VashaNatasha [74]

Answer:

a. Heterozygous individuals may pass on their copy of the disease-causing allele to offspring.

Explanation:

Tay-Sachs, which is a recessive lethal disease  ---- Let say the recessive lethal diseases is s

∴ it only results when an individual posses two copies of the diseases-causing allele i.e two copies of the disease will be ss.

Now, when two hetrozygous individuals crossed , it is obvious that each can pass on their copy of the disease-causing allele to the offspring.

Let show an illustration for the above statement.

Let the heterozygous individual be Ts, if Ts cross with another Ts;

we will have:

Ts × Ts

         T          s

T        TT        Ts

s        Ts          ss

the offspring are TT,Ts,Ts,ss

We can now see how the Heterozygous individuals pass on their copy of the disease-causing allele to the offspring (Ts).

8 0
3 years ago
Is an example of excretion peeing? and is an example of egestion pooping?<br><br>​
natima [27]

Answer:

yes and yes

Explanation:

that is correct

5 0
3 years ago
Read 2 more answers
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