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m_a_m_a [10]
2 years ago
13

A coconut rolls down a beach, get carried away from shore by the outgoing tide, washes ashore on a faraway island weeks later, a

nd sprouts into a coconut palm tree. Years later, coconut palms are abundant along the shoreline but rare up the slope of the volcano that occupies the middle of the island. What kind of physical barrier may be preventing coconut palm seeds from dispersing to higher ground?
Biology
2 answers:
Anastasy [175]2 years ago
8 0

Answer:

Explanation:

The official USDA hardiness zone of the Coconut is 10a (meaning it can handle temps of 30-ish Fahrenheit VERY briefly, and can also be seen in very small microclimates in 9b parts of Texas and Florida) but that is only with hot humid summers. In California, the places that have proper moisture and suitable winter temperatures (10a or higher) do not have high enough summer temps. If summer temperatures do not reliably reach 80F or higher, then a Coconut Palm will only live for a few years before it is irreversibly weakened by not having the proper level of sugars built up in its roots, which become malformed and underdeveloped by the lack of ground heat

Colt1911 [192]2 years ago
5 0

Answer:

they can’t move up hill probably because of bad dirt or a it’s to much of a slope

Explanation:

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Alpha cells are to ________ as beta cells are to ________.
Pie

alpha cells are glucagon and beta cells are insulin


4 0
3 years ago
tall heterozygous pea plants were crossed and the resulting seeds grown. Out of 360 plants, 270 were tall and 90 dwarf. What des
lozanna [386]

Answer:

This question lacks options, the options are:

A. All 270 tall plants were heterozygous

B. All 270 tall plants were homzygous.

C. Only 90 plants were homzygous.

D. All dwarf plants were homzygous.

The answer is D.

Explanation:

This question involves a single gene coding for height in pea plants. The allele for tallness (T) is dominant over that of dwarfness (t). This means that a dwarf plant can only be homzygous recessive (tt) while a tall plant can either be homzygous (TT) or heterozygous (Tt).

According to the question, two tall heterozygous pea plants were crossed i.e. Tt × Tt. Based on this cross, a phenotypic ratio of 3:1 is expected, which is in accordance with the 270 tall plants and 90 dwarf plants (360 total) that was obtained in the cross. Since dwarfism in pea plants is a recessive trait, this means that all the dwarf plants produced in this cross (90) were homzygous (tt).

3 0
3 years ago
A scientist has a very small sample of DNA. To analyze the DNA, which would be the MOST USEFUL first step for the scientist to f
Karo-lina-s [1.5K]

Answer:

B. Use the polymerase chain reaction (PCR) to make multiple copies of the DNA.

Explanation:

The scientist is to analyze a small sample of DNA, the most useful step to start this would be first the use of polymerase chain reaction to make various copies of that DNA sample. PCR is essential and quick process that gives a lot of copies within few hours. It uses the sample or target DNA, according to which the primers are designed. Taq polymerase and DNA polymerase are also used in the process, it consist of various cycles in which copies are made. There are three basic steps 'Denaturation', 'annealing', and 'extension'.

5 0
4 years ago
A) Prof. Robo is studying skin color of Banana Slugs. He has isolated 8 recessive mutants that are white instead of yellow. He p
Akimi4 [234]

Answer:378

Explanation: 378

have been cloned and

The other 207 loci have been mapped out, the true gene identities have yet to be determined.

8 0
3 years ago
Your patient is in cardiac arrest and has been intubated. to assess cpr quality which should you do
belka [17]

To assess the CPR quality, once the tube has been inserted by one of your members, one should continue chest compressions so that it will help the patient to breathe and a way of giving assistance to the heart. The waveform in the capnogrophy screen should be assessed and to find out whether the CPR is working.

7 0
3 years ago
Read 2 more answers
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