In the early 1800s how did Drawin explain the origin of species

A water solution whose pH is 4 a. is always neutral. c. is always acidic. b. is always basic. d. might be neutral, basic or acidic.

How many significant figures should the product 62.25x37.4 have

Blood movement across the chambers of the heart is referred to as:

You performed the gram stain. you are expecting to find purple gram-positive cocci and pink gram-negative bacilli. instead, you observe purple cocci but don't seem to see any bacilli. how could you explain this?

Germination A. is unaffected by temperature or any other conditions within the environment. B. ends with dormancy. C. is the same process for both monocots and dicots. D. is the process that occurs when the seed swells and breaks and growth occurs.

What is the average speed of a cheetah cub?

What the Law of Conservation of Matter/Energy?

Predict what might happen if there were no nitrogen-fixing bacteria on Earth

If two different animal species are found to go through equivalent stages of embryonic development until the very last stage, which conclusion would this phenomenon support? A. The two animal species are very closely related. B.

True or False: carbon emissions lead to global warming by trapping the suns heat in the atmosphere