What important gas did stromatolites (cyanobacteria) release into the atmosphere?

klasskru [66]

The answer to the first question is a.

4 0

3 years ago

A student did an experiment with two identical fish tanks, Tank 1 and Tank 2. About 20 ml water purifier was added to Tank 1 and

maw [93]

Answer:

a . Fish need 10 ml of water purifier to survive.

Explanation:

Fish need 10 ml of water purifier to survive because the data of 10 ml and 20 ml purifier is the same so it is recommended to use 10 ml purifier. First the data was same but by recording next week data, it shows slightly increase in the value of tank 2 while in the last week, both has the same value so we can concluded that by using 10 ml purifier is enough for the fish to survive.

6 0

3 years ago

What are 5 examples of coevolution from the movie Evolutionary Arms Race?

Step2247 [10]

Answer:

1. The adaptation of the garter snake to the increasing toxicity of the rough-skin newt

2. The development of antibiotic-resistance by the tuberculosis bacteria in prisoners in Russian prisons

3. The development of FIV-resistance in wildcats

4. The immunity to HIV in about 10% of caucasians due to mutations in their cells that occured among those who survived the Black Death.

5. The development of immunity to asthma in children exposed to livestock at an early age in Bavaria

Explanation:

Coevolution refers to the the evolution that occurs in two species of organisms due to the mutual interaction or interdependence of the two species. Due to this interaction among species, a change in one organism results in adaptive changes in the other organism as well.

Coevolution can occur is any of these relationships between organisms: predator-prey, mutualism, or commensalism.

In the movie, Evolutionary arms race, the following examples of coevolution were highlighted:

1. The adaptation of the garter snake to the increasing toxicity of the rough-skin newt.

2. The development of antibiotic-resistance by the tuberculosis bacteria in prisoners in Russian prisons.

3. The development of FIV-resistance in wildcats.

4. The immunity to HIV in about 10% of caucasians due to mutations in their cells that occured among those who survived the Black Death.

5. The development of immunity to asthma in children exposed to livestock at an early age in Bavaria.

7 0

3 years ago

Why was it profitable for General Motors and Ford to integrate backward into component-parts manufacturing in the past, and why

Fynjy0 [20]

Answer:

Why was it profitable?

(1) To control the quality of their spare parts.

(2) To reduce cost.

Why do they buy more parts outside?

(1) Inefficient in-house parts manufacturing.

The cost of managing Internal

(2) manufacturing of Automobile parts has increased.

Explanation: General motor and Ford are both world class Automobile manufacturers with several vehicles in every part of the world, General motors have its assembly plant in about 120 countries of the World.

During the early 20th Century they found that the local suppliers were unable to meet their Demand in terms of Quality and quantity and it was very expensive. So they started a backward integration to help regulate the quality,meet their Demand and save cost.

In recent times between the late 20th Century till recent times they buy more parts from external suppliers because the cost of managing Internal manufacturing became high because of labor costs and inefficiency caused by lack of competition and Japanese manufacturers have been able to meet their requirements.

8 0

3 years ago

Help me please, it’s due tomorrow

NeTakaya

Sorry I don’t know but good luck

3 0

3 years ago