1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valkas [14]
3 years ago
5

The initial evolution of humans occurred on which continent?

Biology
1 answer:
kondaur [170]3 years ago
8 0
Primarily in East Africa ( I think)
You might be interested in
How does the thyroid gland help maintain and regulate calcium?
Art [367]

Answer:

When the calcium level is high in the bloodstream, the thyroid gland releases calcitonin. Calcitonin slows down the activity of the osteoclasts found in bone. This decreases blood calcium levels. When calcium levels decrease, this stimulates the parathyroid gland to release parathyroid hormone.

4 0
2 years ago
2 points
tekilochka [14]

Answer:

Oxygen 46%, silicon 28%, aluminum 8.3%, iron 5.6%, calcium 4.2%, sodium 2.5%, magnesium 2.4%, potassium 2.0%, and titanium 0.61% everything else is less than 0.15%

6 0
2 years ago
What factors affect water quality?
Artemon [7]

Many factors affect water quality

Sedimentation.

Runoff.

Erosion.

Dissolved oxygen.

pH.

Temperature.

Decayed organic materials.

Pesticides.

6 0
3 years ago
What are the two types of vascular tissue found in plants?.
kobusy [5.1K]

Answer:

Xylem & Phloem are two types of vascular tissue found in plants.

7 0
2 years ago
Read 2 more answers
4. You have 263 mL of liquid mercury, what is the mass of mercury that you have? (Note:
xeze [42]
If we had 263 ml of mercury (volume) the density of the mercury is 13.55
g/cm”

Mass = Density x Volume (use image attached as guide)
Mass = 263 x 13.55 = 3563.65
Your mass should be 3563.65

8 0
3 years ago
Other questions:
  • Which of these is a courting behavior that can increase a male's probability of reproductive success?
    9·1 answer
  • What is the Richter Scale?
    8·2 answers
  • "Methods A and B are classified as methods of passive transport because they do not require
    7·2 answers
  • Which statement best describes the relationship between observations and conclusions? A) observations are based on conclusions B
    6·1 answer
  • Suppose you are an astronomer, and a child asks you to explain how long it takes light to travel through space. In your own word
    15·1 answer
  • How much of the earth's surface is covered in water?
    9·1 answer
  • Name three carbohydrates that contain glucose as a monomer.
    11·1 answer
  • Wha<br> t is compound microscope
    6·2 answers
  • The physial layer of the earth made of solid rock and soil is called
    11·1 answer
  • Consider the following statements. Which of these statements is the hypothesis?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!