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lutik1710 [3]
3 years ago
7

The process of injecting water, sand, and chemicals under high pressure into rocks to release oil and natural gas is known as

Biology
1 answer:
sesenic [268]3 years ago
6 0
This process is called fracking.
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ANEK [815]
C I believe because they are living so they are able to breath
5 0
2 years ago
Read 2 more answers
Which of the following best explains ways in which fish and mammals differ? (2 points)
VLD [36.1K]
The answer is <span>Fish are ectothermic and lay eggs to reproduce, while mammals are endothermic and give live birth to offspring.

Through the elimination process:
</span><span>* Fish are <u>invertebrates</u> and have scales and paired fins, while mammals are vertebrates and have fur or hair. - Fish are vertebrates!
</span><span>* Fish are <u>endothermic</u> and have gills, while mammals are <u>ectothermic</u> and have lungs. - Fish are ectothermic (cold-blooded), and mammals are endothermic (warm-blooded)!
</span>* <span>Fish have streamlined bodies and <u>three-chambered hearts</u>, while mammals are <u>bipedal</u> and have four-chambered hearts. - Fish have four chambered hearts and not all mammals are bipedal!

This leaves choice: </span><span>Fish are ectothermic and lay eggs to reproduce, while mammals are endothermic and give live birth to offspring. All of this is true, but it should be taken into consideration that some fish give live birth and some mammals lay eggs, but this is the most possible choice among all mentioned.</span>
3 0
3 years ago
Read 2 more answers
Đem giao phấn giữa hai cây bố mẹ đều TC thì được F1 xuất hiện một khiểu hình . Tiếp tục cho F1 tự giao phối với nhau thì thu đượ
seropon [69]

Answer:

Đưa về tỉ lệ kiểu hình ta được:

F1 x F1 => F2:

\frac{711}{79}

cây cao, quả đỏ:

\frac{240}{79}

cây cao, quả xanh:

\frac{238}{79}

cây thấp, quả đỏ:

\frac{79}{79}

cây thấp, quả xanh.

Explanation:

<=> 9 cây cao, quả đỏ: 3 cây cao, quả xanh: 3 cây thấp, quả đỏ: 1 cây thấp, quả xanh.

Xét từng cặp tính trạng:

* Cặp tính trạng chiều cao:

Cao: Thấp = 3:1 => tính trạng thân cao trội hoàn toàn so với thân thấp.

* Cặp tính trạng màu sắc quả:

Đỏ: Xanh = 3:1 => tính trạng quả đỏ trội hoàn toàn so với quả xanh.

Qui ước gen:

A: thân cao                     a: thân thấp

B: quả đỏ                        b: quả xanh

Lấy tích cả 2 cặp tính trạng: (3 cao: 1 thấp)(3 đỏ: 1 xanh) = 9 cao, đỏ: 3 cao, xanh: 3 thấp, đỏ: 1 thấp, xanh => tỉ lệ bằng với tỉ lệ đề bài => 2 cặp gen qui định 2 cặp tính trạng di truyền theo qui luật phân li độc lập.

Suy ra kiểu gen:

- Ở cặp tính trạng chiều cao có tỉ lệ kiểu hình 3 thân cao: 1 thân thấp => bố mẹ F1 phải cho 2 giao tử và mang gen a.

=> F1 x F1 = Aa x Aa. (1)

- - Ở cặp tính trạng màu sắc quả có tỉ lệ kiểu hình 3 quả đỏ: 1 quả xanh => bố mẹ F1 phải cho 2 giao tử và mang gen b.

=> F1 x F1 = Bb x Bb (2).

Từ (1) và (2) => Bố mẹ F1 phải có kiểu gen AaBb x AaBb.

Vì đem lai 2 bố mẹ thuần chủng nên ta sẽ có 2 trường hợp.

Trường hợp 1:

P: AABB x aabb

G: AB       ; ab

F1: 100% AaBb.

Trường hợp 2:

P: AAbb x aaBB

G: Ab     ;  aB

F1: 100% AaBb

6 0
3 years ago
Which geological features occurs at divergent boundaries? Give 2 examples of
My name is Ann [436]

Explanation:

Geological features at divergent boundaries are:

On land:

  • Rift valleys
  • Geothermal vents

On seafloor:

  • Oceanic ridges
  • Seamounts

A divergent boundary is a constructive margin where two plates moves away from each other. Divergence allows for new magma to upwell to the surface.

Evidence of divergence is seen in the ocean as the mid-oceanic ridge and seamounts.

On land i.e within the continent: rift valley systems in East Africa and Geothermal vents in Iceland are popular features.

Learn more:

continental drift brainly.com/question/5002949

#learnwithBrainly

3 0
3 years ago
What is true of all body cells except sex cells?
lianna [129]

Answer:

While each cell in the body contains the same number of chromosomes, each cell type has a different number of genes along those chromosomes.

6 0
3 years ago
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