All categories

3 years ago

Please Help!! 15 points!!!!!!!!!

Biology

1 answer:

xz_007 [3.2K]3 years ago

6 0

For primary succession to occur, there must be a pioneer species or dirt/soil.

Over hundreds of years these “pioneer species” convert the rock into soil that can support simple plants such as grasses. These grasses further modify the soil, which is then colonized by other types of plants. Each successive stage modifies the habitat by altering the amount of shade and the composition of the soil. The final stage of succession is a climax community, which is a very stable stage that can endure for hundreds of years.

You might be interested in

As discussed previously, the ABO locus in humans has three alleles, where IAand IBare co-dominant and i is recessive to each. Su

Ivahew [28]

Answer:

Explanation:

using the formula p² + 2pq + 2pr + q²+ 2qr + r² = 1 where p is IA allele is 0.35 and q is IB allele is 0.15.

Thus, the expected frequency of people with type AB blood in this population will be (2pq) = 2 x 0.35 x 0.15 = 0.105

b. The expected frequency of people with type A blood will be p² + 2pr = where r is found using the formular p + q + r = 1 = 1 - (p+q) = 1 - (0.35+0.15) = 0.5

Thus, we have the expected frequency of people with type A blood to be (0.35² + 2x0.35x0.5) = 0.4725.

c. p² + 2pr + 2pq + q² + 2qr + r²

AA AO AB BB BO OO

1850 180 635 2335

frequency of IA- p = (1850 + 180/2) / 5000 = 0.388

frequency of IB- q = (635 + 180/2) / 5000 = 0.145

frequency of i- r = 2335/ 5000 = 0.467.

since r² = 2335, r = √2335 = 48.32

using the formula p + q + r = 1

4 0

3 years ago

What is peristalic movement?

san4es73 [151]

Answer:

The wave like motion of a tube.. generally oesophagus due to which, food goes down

Explanation:

peristalsis have alternative contraction and relaxation movements

7 0

3 years ago

Which of the following rock types would be more likely to have a course grained texture

Brilliant_brown [7]

Answer:

granite

Explanation:or basalt

please thanks this answer by pressing the heart

8 0

4 years ago

If 2 organisms are in the same order, they must also be in the same...

Bas_tet [7]

If two organisms are in the same ORDER, they must be in the same class, phylum & kingdom

3 0

2 years ago

Which takes places as a result of double fertilization in an angiosperm?

alisha [4.7K]

The answer would be C, double fertilization produces a triploid zygote and a tripped endosperm!

4 0

4 years ago

Read 2 more answers