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Troyanec [42]
3 years ago
14

What do you think? Are humans an invasive species? Refer to the definition of invasive species to support your answer. Invasive

species: A species that is not native to an ecosystem and causes environmental and/or economical harm.
Biology
1 answer:
Sedaia [141]3 years ago
6 0

Answer:

Yes, the humans are invasive species.

Explanation:

The homeland of the modern day humans is Africa, thus they are native o the African continent. But the humans started to spread gradually, first in Eurasia, and later in Australia, North America, South America, and the Pacific islands, to a point now where they have reached pretty much every corner of the world. This is a textbook example of an invasive species that has entered into new ecosystems. Not just that the humans were entering into new ecosystems, but they also were changing the ecosystems, more often then not causing a lot of damage on them, leading to the destruction of lot of habitats and extinction of lot of species.

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Which structural characteristic is found in both plant and animal cells?
defon


The best answer is A.

Mitochondria are small organelles found floating  free in the cytoplasm of both animal and plant cells. They consist of two membranes, an outer and inner membrane which has numerous folds creating layered structures called cristae.Inside the mitochondria, there is found  fluid called the matrix

 Mitochondria are the powerhouse of cells. Many of the reactions in cellular respiration that take place in the cell occur in mitochondria and thus these organelles are key in the production of energy .


6 0
3 years ago
Which female organ sheds its lining through menstruation?.
kicyunya [14]

Answer:

Menstruation is one part of a person's menstrual cycle which includes the shedding of the endometrium (lining of the uterus) that occurs throughout a person's reproductive life.

8 0
1 year ago
Which type of dissecting equipment listed below is most similar to tweezers? A. scissors B. forceps C. probe D. scalpel
madam [21]
Forceps, they literally are almost the exact same thing.
5 0
3 years ago
Read 2 more answers
3. During meiosis,
Anna71 [15]

Answer:

Cells divide twice

Explanation:

Meiosis may be defined as the process of cell division in which a single cell divides to give four daughter cells and each daughter cells  have half number of chromosomes.

Meiosis is also known as reduction division as the chromosome number reduces upto half in the progeny cells as compared with the parent cell. The cells divide twice in meiosis and give rise to four daughter cells.

Thus, the correct answer is option (4).  

3 0
3 years ago
small group of 100 people decide to isolate themselves from the world and move to a small and remote deserted island. Out of thi
irina [24]

Answer:

Frequency of p = 0.684

Frequency of p = 0.316

Number of individuals with homozygous dominant (AA) = 47

Number of individuals with heterozygous (Aa)= 43

Number of individuals with homozygous recessive (aa) = 10

Explanation:

Out of 100 people, 10 have albino skin (aa)

So, the frequency of homozygous recessive individuals (q^{2}) is \frac{10}{100} = 0.1

Now, q will be

= \sqrt{q^{2} } = \sqrt{0.1} \\= 0.316

As per Hardy Weinberg's equation -

p + q = 1

Substituting the value of q in above equation, we get -

p + 0.316 = 1p = 1 -0.316\\p = 0.684

Now the frequency of homozygous dominant (AA) will be

p^{2} = 0.684^{2} \\= 0.467

Hence, out of 100 people 0.467 * 100 = 46.7 or 47 people are homozygous dominant (AA)

Like wise out of 100 people 0.1 * 100 = 10 people are homozygous recessive (aa)

As per As per Hardy Weinberg's equation-

p^{2} + q^{2} + 2pq = 1\\

Substituting the values in above equation, we get -

0.467 + 0.316 + 2pq = 1\\2pq = 1 -( 0.467+ 0.1)\\2pq = 0.433

So, out of 100 people 0.433 * 100 = 43.3 or 43 people are heterozygous (Aa)

7 0
3 years ago
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