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3 years ago

Which of the following is an example of primary succession?

Biology

1 answer:

kiruha [24]3 years ago

4 0

Answer:

B. the appearance of lichens and mosses in an area where a glacier has recently melted away

Explanation:

Ecological succession, which refers to the series of changes that occurs over time in an ecosystem, can be of two types namely: primary succession and secondary succession.

Primary succession is a succession that involves an area where no form of life has grown previously, hence, the area of land is barren e.g bare rock. Primary succession is first colonized by species called PIONEER SPECIES e.g. lichens, mosses etc.

According to this question, "the appearance of lichens and mosses (pioneer species) in an area where a glacier has recently melted away" is an example of PRIMARY SUCCESSION.

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Verdich [7]

1) metaphase 1, metaphase 2

3) meiosis, half

4) eggs, sperms

5) mitosis, same

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2 years ago

Technology best described as :

AleksAgata [21]

Option d. the application of science to solve practical problems

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2 years ago

Examples of 3 types of marine organisms that have been genetically engineered

Delvig [45]

Three examples of marine genetically engineered organisms are:

1. AquAdvantage salmon is genetically engineered Atlantic salmon modified in order to achieve fast growth. A growth hormone-regulating gene of Pacific salmon is introduced in the genome of Atlantic salmon.

2. Grass carp was also modified by scientist in order to enhance its protection from contagious diseases. It has been modified with a transgene coding for lactoferrin (antibacterial function). So, the, survival rate of the modified Grass carp was doubled comparing to nonmodifeied fish.

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3 years ago

Upon arriving at the scene of a motor vehicle crash, you note that two small cars collided head-on; the occupants are still in t

Stells [14]

Answer:

should put on high-visibility safety vest

Explanation:

Based on the scenario it can be said that after parking the ambulance at a safe distance, you and your partner should put on high-visibility safety vest. These safety vests allow other safety officials know that you are there to help and are authorized to be there, as well as help individuals and drivers see you better in order to avoid another accident.

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3 years ago

According to the Acceptable Macronutrient Distribution Ranges for protein, an individual should consume between ______ and _____

snow_lady [41]

Answer:

50 grams and 175 grams

Explanation

Acceptable macronutrient distribution range are predetermined ranges of intake of a specific macronutrient such as Proteins, carbohydrates and fats.

It was developed to promote healthy diet in the society.

According to the AMDR, the ranges of proteins should be 10-35 percent of the calories.

Therefore;

10/100×2000=200

But 1g contains 4 kilocalories of protein so;

200kCal/4kcal=50 grams

35/100×2000=700 kcal of protein so; 

700kcal÷4kcal= 175 grams 

8 0

3 years ago