Question

Помогите срочно пожалуйста !!!!!!!!!!!!!!! Даю 55 балов !!!!!!!!!!!!!!!!!!!!!!!!!! fill in the gaps with the correct preposition.They,correct the statements.Compare with your partner. 1.Life.............Earth arose in an oxygen-rich environment. 2.Our bodies process oxygen.............. 100% effectiveness 3.Oxygen has always been present................. the atmosphere. 4.The appearance of photosynthesis............ plant is known as the Great Oxidation Event. 5.Evidence suggests animal life appeared.................... land and.............. the oceans................ about the same time. 6. Land animals depend................. land plants for most of their oxygen

Answer 1

Ответ:

1. on

2. with

3. in

4. in

5. on---in---at

6. on

Объяснение:

Answer 2

1. Life on Earth arose in an oxygen-rich environment. 2. Our bodies process oxygen with 100% effectiveness. 3. Oxygen has always been present in the atmosphere. 4. The appearance of photosynthesis in plants is known as the Great Oxidation Event. 5. Evidence suggests animal life appeared on land and in the oceans at about the same time. 6. Land animals depend on land plants for most of their oxygen.

1. Life on Earth arose in an oxygen-rich environment.

The statement is correct. Life on Earth is believed to have originated in an oxygen-rich environment.

2. Our bodies process oxygen with 100% effectiveness.

The statement is incorrect. Our bodies do not process oxygen with 100% effectiveness. Some oxygen is released as waste during the process of cellular respiration.

3. Oxygen has always been present in the atmosphere.

The statement is incorrect. Oxygen has not always been present in the atmosphere. The Earth's early atmosphere was primarily composed of gases like methane, ammonia, and water vapor. It was only after the appearance of photosynthetic organisms that oxygen began to accumulate in the atmosphere. This event is known as the Great Oxidation Event.

4. The appearance of photosynthesis in plants is known as the Great Oxidation Event.

The statement is correct. The appearance of photosynthesis in plants is indeed known as the Great Oxidation Event. This event occurred around 2.4 billion years ago and led to a significant increase in atmospheric oxygen levels.

5. Evidence suggests animal life appeared on land and in the oceans at about the same time.

The statement is correct. Evidence suggests that animal life appeared on land and in the oceans at about the same time. Fossil records show that the first animals capable of living on land, such as arthropods, appeared around the same time as early marine animals.

6. Land animals depend on land plants for most of their oxygen.

The statement is correct. Land animals depend on land plants for most of their oxygen. Through the process of photosynthesis, land plants produce oxygen as a byproduct, which is then released into the atmosphere. Animals, including land animals, rely on this oxygen for respiration.