Answer:
OMG ive done this!!!!!!...
the instructions for the egg and sperm one are down there mine was not very good maybe yours will be a bit better loll
The mass of the rock is 4,000 g because mass= Density multiplied by volume so you do 200 * 20
The answer is D. Cattle have microbes in their stomach that produce methane during digestion
Answer and Explanation:
Scanning Objective Lens (4x): it has a low magnifying power. It is used to make scanning scanning analyzes, can be used in conjunction with a 10x ocular lens, expanding its magnification to 40x
Low Power Objective (10x): It is efficient for analysis on glass slides and is one of the most used lenses due to its high adaptability. Provides a very close view of the user.
High Power Objective Lens (40x): It allows a much closer view because it has high power. It allows the visualization of fine and delicate details.
Oil Immersion Objective Lens (100x): provides powerful magnification, allowing many details to be observed. It can be combined with an eyepiece lens, expanding its magnifying capacity. It needs to be dipped in oil to work properly.
The appearance of banded iron layers in the rock record between 1.08 and 3.8 billion years ago reflect the alteration of oxygen-rich and oxygen-poor conditions in the ocean at that time is True.
<u>Explanation:</u>
The banded iron formation of the rock is directly related with the atmospheric oxygen content of that time. The thorough study by the scientists revealed an interesting result. The study showed that about 3 billion years ago, in Canada, there were no oxygen in atmosphere or ocean as well.
This resulted in the increase of the photosynthesizing organisms. The chemicals released from the organisms reacted to the iron of the ocean to deposit iron oxide layer on rocks to form these layers.
