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m_a_m_a [10]
3 years ago
14

Which of the following was not developed until the early part of the twentieth century?

Biology
1 answer:
OleMash [197]3 years ago
3 0

Answer:

Explanation:

absolute time

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Which statement is true about the environment of urban areas
emmasim [6.3K]

The promise of jobs and prosperity, among other factors, pulls people to cities. Half of the global population already lives in cities, and by 2050 two-thirds of the world's people are expected to live in urban areas. But in cities two of the most pressing problems facing the world today also come together: poverty and environmental degradation.

3 0
3 years ago
Scientists often experiment with Brassica plants
8090 [49]

Scientists often experiment with Brassica plants because they have a relatively short growth period, and they may represent model organisms for genetic studies.

<h3>Why use the Brassica plants in genetic studies?</h3>

Brassica plants are considered model organisms in genetic studies because they have a short period of growth (around 30 days), which allows the analysis of a high number of generations in less time.

Moreover, the genome of Brassica plants contains 24 Gigabases (24 billion nucleotide bases), which is a high number to be considered a model organism in genetic studies.

In conclusion, scientists often experiment with Brassica plants because they have a relatively short growth period, and they may represent model organisms for genetic studies.

Learn more about genetic model organisms here:

brainly.com/question/13281176

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6 0
2 years ago
(WILL MARK BRAINLIEST AND THANK YOU!) **EXTRA POINTS**
liberstina [14]

Answer:

This structure provides support and protection for plant cells = Cell Wall

This is a large, central fluid-filled structure that provides turgidity = Vacuole

A thin semipermeable barrier around the cell which regulates what enters and leaves the cell = Cell membrane

The control center of the cell = Nucleus

It is often described as the cells Power Plant = Mitochondria

This is used by plant cells for photosynthesis = Chloroplast

Hope this helps :)

Plz mark Brainliest :D

Explanation:

The giant blue thing is the vacuole

The thin yellow line is the cell membrane

The yellow and orange ball is the nucleus

The light green thing with zig zag lines is the mitochondria

The dark green thing inside the cell is the chloroplast

The thing outside the cell is the cell wall its green

6 0
3 years ago
Read 2 more answers
Describe five advantages of artificial classification​
OleMash [197]

Answer:

there it is fella

i guess the hand writing is not that bad

6 0
3 years ago
A student decides to be the subject in her own experiment. She wants to know how the amount of time she spends studying for a te
Pavel [41]

Answer:

Test Variable (independent variable)

Explanation:

X is always the independent variable/time. Test grades is dependent because it's the outcome. Trust me I took the test.

6 0
3 years ago
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