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Setler [38]
3 years ago
15

U-Science-Gr7-Unit5-PBT-C!

Biology
1 answer:
Karo-lina-s [1.5K]3 years ago
3 0

Answer: The bright colors will attract insects that can carry the pollen needed for plant reproduction.

Explanation: Bright colored plants help plants with reproduction, which is an advantage for the flowers because plants will continue to grow & reproduce.

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Biosphere
NARA [144]
I feel like the answer would be A because photosynthesis gives off energy and they don’t produce glucose
8 0
3 years ago
A student purchased a small turtle. Three months later, the turtle had grown totwice its original size. Which of the following s
aleksandrvk [35]

Answer:

its either b or c but im leaning towards b good luck

Explanation:

3 0
3 years ago
Read 2 more answers
Which describes oxygen content as Earth evolved over time? Oxygen levels sharply declined about 400 million years ago. Oxygen le
denis-greek [22]

Answer:

Oxygen levels stay above 15 percent starting 200 million years ago

Explanation:

Atmospheric oxygen levels are related to the evolution on Earth and changes in geochemical cycles that involve climate variations.

The presence of O 2 and evolution of oxygen gave new opportunities to the life on Earth. Oxygen levels in atmosphere have fluctuated between 15% and 35% of atmospheric volume, since the start of the Cambrian period.

So, form the starting 200 million years ago, oxygen level stay above 15 percent and the correct option is "B".

7 0
3 years ago
Is this an observation or an inference: there are tracks from three different animals in the rock.
Anvisha [2.4K]
It is an inference that
<span> there are tracks from three different animals in the rock.</span>
6 0
3 years ago
Steroids differ structurally from triglycerides and phospholipids, although they are all classified as lipids. What characterist
Yakvenalex [24]

Answer:

Lipids are hydrocarbon molecules that make up the structure of living beings. Few examples are <u>fats, oils and waxes</u>. Steroids are also a class of lipids but they are not structurally related to other lipids but do share some common properties with them. They are <em>insoluble in water and are hydrophobic</em>( water-repelling).

Explanation:

Lipids are insoluble in water as they are <em>non-polar</em> but soluble in non polar solvents (<em>chloroform</em>). Fat soluble vitamins like <u>A,D,E,K and steroids</u> have a different structure composed of fused four rings.

The most common example of steroid is cholesterol. Cholesterol acts as a precursor for many hormones and other signalling molecules.

7 0
3 years ago
Read 2 more answers
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