Correct Answer: B. soil profile

Correct Answer: A. The kano riot of 1953

Correct Answer: A) CFCs

Correct Answer: D) corolla

Explanation

In a flower, the petals are the colorful, often fragrant structures that are located inside the sepals. Petals are one of the most recognizable parts of a flower and serve important purposes like attracting pollinators such as bees and butterflies. In this JAMB/WAEC/NECO Biology exam question, you are asked to identify the correct term used to collectively describe petals in a flower. The four options are calyx, capsule, carpel, and corolla. Option A, calyx, refers to the sepals of a flower, which are typically green and leaf-like in appearance. Option B, capsule, refers to a dry fruit that typically splits open when mature to release seeds. Option C, carpel, refers to the female reproductive part of a flower, which includes the stigma, style, and ovary. The correct answer to this question is Option D, corolla. The corolla is the collective term used to describe all of the petals of a flower. Therefore, when you see the word 'corolla' in a question, you should think of the petals. It is important to understand the different parts of a flower and their functions in order to be able to identify them correctly in questions like this.

Correct Answer: D. General Muhammadu Buhari

Explanation

The 'War Against Indiscipline' campaign was introduced by General Muhammadu Buhari in March 1984. The campaign was aimed at promoting discipline, orderliness, and respect for public properties among Nigerians.

Explanation

he novel explores the theme of gender discrimination and its negative effects on women. In the novel, a young woman, Adah, struggles against various forms of discrimination in her male- dominated society.

Adah is an ordinary Igbo girl growing up in Nigeria. her father dies when she is still young; her dream of pursuing education nearly shattered. She finds support from her paternal uncle to continue. She's denied education simply because she is a girl. She enrols herself in school. She accepts to marry Francis at a very early age and becomes a mother in her teens, she works to support her husband and children and aspires to travel abroad in the hope of better life, also she consents to Francis leaving alone to study abroad. She experiences a very hostile weather, drastically different from the bright and sunny weather back home. Francis is lazy and abusive towards her, she finds a job and works to support her husband's schooling and her children, she experiences racial discrimination; this is revealed in her search for lodgings and she receives intolerance from other Nigerians of different ethnic backgrounds. She is not put down when Francis burns her manuscript. She decides to be a writer. Already saddled with 4 children, she decides to practise birth control, she leans very early in life that with determination she can survive on her own, she never gives up on her dreams.

Correct Answer: A. 88.9%

Explanation

To calculate the percentage by mass of copper in copper(I) oxide (Cu₂O), we need to follow these steps:

1. Determine the molar mass of copper (Cu) and oxygen (O).

Given:

Cu = 64

O = 16

2. Calculate the total mass of copper in one molecule of Cu₂O.

There are 2 copper atoms in Cu₂O.

Mass of Cu = 2 * 64 = 128

3. Calculate the molar mass of Cu₂O.

Molar mass of Cu₂O = (2 * Mass of Cu) + (1 * Mass of O)

Molar mass of Cu₂O = (2 * 64) + (1 * 16)

Molar mass of Cu₂O = 128 + 16

Molar mass of Cu₂O = 144

4. Calculate the percentage by mass of copper.

Percentage by mass of Cu = (Total mass of Cu in Cu₂O / Molar mass of Cu₂O) * 100%

Percentage by mass of Cu = (128 / 144) * 100%

Percentage by mass of Cu = 0.8888... * 100%

Percentage by mass of Cu = 88.88...%

5. Round to the nearest tenth.

Percentage by mass of Cu ≈ 88.9%

Comparing this to the given options:

A. 88.9%

B. 80.0%

C. 66.7%

D. 20.0%

The correct option is A.

The final answer is 88.9\%

Correct Answer: C. stopped

Correct Answer: B. backed by law

Correct Answer: B. act as windbreakers and provide shades