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3 years ago

What changed about the finches that Darwin observed that allowed them to fill a variety of niches?

Biology

1 answer:

yan [13]3 years ago

3 0

Answer:

B. Their beak shape

Explanation:

These birds, although nearly identical in all other ways to mainland finches, had different beaks. Their beaks had adapted to the type of food they ate in order to fill different niches on the Galapagos Islands. Their isolation on the islands over long periods of time made them undergo speciatio

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Which of the following is not a function of Carbohydrates in your cells?

qaws [65]

Please upload a picture so I can answer the question.

5 0

3 years ago

Maintaining the integrity of the stock reagents is a constant concern in the lab environment. Read the situations and decide if

Anarel [89]

Answer:

Question is incomplete i have added full question at the end of this answer because im not able to add it in ask for detail section.

Answer:

1. Contaminate (Because NaOH is a base while H2SO4 is an acid. If student mix both this will result in chemical reaction.)

2. Contaminate (Because returning regents are used already id used regents put back in the bottle it will contaminate the fresh reagents.)

3. Contaminate (Using same spatula without sanitation results in mixing of one reagent into other regents which results in failure of experiments.)

4. Does Not Contaminate (It does not have any effect on the reagent because solid reagents are weighted that can be cleaned off when poured into reaction flask.)

5. Does Not Contaminate (Because washing flask after each experiment will wash off the left reagents present in flask.)

6. Contaminate (This will result in contamination because potassium iodide (KI) solution will be mixed with waste)

FULL QUESTION

Maintaining the integrity of the stock reagents is a constant concern in the lab environment. Read the following situations and decide if each represents a valid contamination concern.

1. A student uses a pipet designated for the NaOH solution to pipet the H2SO4 solution.

2. Several students have left-over reagents after the completion of an experiment and decide to return the excess reagents to their original containers.

3. Only one spatula is available to measure out several different white powders.

4.Rather than wasting multiple weigh boats, a student decides to wash and dry a single weigh boat in-between uses.

5. A group of students must use the same 500 mL volumetric flask to make solutions. Between each use they wash and dry the flask.

6. At the end of the day, the waste bottle is so full that a student decides to dump his waste into an almost empty bottle of stock KI solution.

3 0

4 years ago

PLEASE HELP!! 100 POINTS AND WILL GIVE BRAINLIEST JUST PLEASE HELPPP!!

Setler79 [48]

Carbon is the universal building block for life as we know it. Its ability to form complex, stable molecules with itself and other elements, particularly hydrogen, oxygen, and nitrogen is unique. Rings are also formed by -O- bridges between carbon atoms lanation.

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3 years ago

Which of these is an unpiloted spacecraft designed to gather information while orbiting planets other than Earth?

gayaneshka [121]

Answer: hello the options related to your question is missing

answer : space probe ( option 1 )

Explanation:

The unpiloted spacecraft designed to gather information while orbiting planets is Space probe

Space probe is a spacecraft that practically gathers ( scientific ) data from the planets which it sends back to scientists on earth for study. A space probe is unlike other spacecrafts because they do not require the presence of an astronaut.

7 0

3 years ago

PLEASE HELP ASAPPP !!! 15 POINTS !!!

sasho [114]

***see attached pic***

Some helpful tips:

The nucleus is always going to be the big, spherical shape.

The ER is always going to be a weird, folded looking structure attached to the nucleus (rough = has ribosomes on it which are usually represented by little dots, smooth = has no ribosomes on it aka no dots)

The GA looks like the ER but it is not going to be attached to the nucleus like the ER is.

The mitochondria is always going to be pill-shaped and have weird folds inside of it.

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3 years ago