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3 years ago

Stage that begins with fertilization

1 answer:

6 0

Development of the embryo begins at stage 1 when sperm fertilizes an oocyte and together they form a zygote. Human development begins after the union of male and female gametes or germ cells during a process known as fertilization (Conception).

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Explain how human activity, pollution, and acid rain are all related to each other

ICE Princess25 [194]

All of those can potentially harm the earth. Human activity is a cause of pollution, and pollution is the cause of acid rain to some extent.

3 0

2 years ago

The question is on the attachment

Helga [31]

Answer:

It controls activities

Explanation:

X is the nucleus of the cell which is sometimes know as the 'brain' of the cell because it controls activities. It contains DNA that is needed to conduct most of the cell's functions.

4 0

2 years ago

Find the slope between (0,-7) and (7,0). Reduce it. show work

lana66690 [7]

Answer:

$\displaystyle m=1$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Explanation:

Step 1: Define

Point (0, -7)

Point (7, 0)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m=\frac{0+7}{7-0}$
[Fraction] Add/Subtract: $\displaystyle m=\frac{7}{7}$
[Fraction] Divide: $\displaystyle m=1$

5 0

2 years ago

What proportion of all species that ever lived has become extinct?

yan [13]

More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described.

4 0

2 years ago

What is the name of the model shiws the number of organism at each level?

Ksju [112]

It's a pyramid of numbers, I believe.

7 0

2 years ago