one of the differences between cambrian animals and precambrian animals was the appearance of___________ such as antenne as Cambrian animals evolved.

Answers

Answer 1

Answer: The difference that you are searching for is the addition of Appendages. They appeared in Cambrian animals and were used to increase their physical capabilities like when sensing and processing the information found in the environment. Common appenadges found in animals are things like antennae found in insects that are used to help them communicate or notice things or similar things.

Answer 2

Answer:

The answer to your question is

Appendages

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Bill broke a test tube. He carefully picked up the broken pieces and placed them in the garbage can. He notified his teacher. Did Bill follow safe lab procedures? YES or NO What could potentially happen next in this situation?

Answers

No, Bill did not follow the safe lab procedures.

What are some safe lab procedures?

Some of the safe lab procedures are as follows:

Wear protective equipment while working in a laboratory.
Try to avoid eating in the laboratory.
Utilize first aid immediately to an injury.
Handle all the apparatus and chemicals with extreme care.
Always required to stay focussed on your work.

When a test tube is broken, you immediately check yourself first and ensure that it can not make any sort of injury to yourself. Then, inform the teacher or manager of the laboratory about this incident.

Then gather all sorts of pieces of broken test tubes carefully with the help of a broom, and placed them separately instead of using the same garbage can that consists of other waste compounds or substances in the laboratory.

Therefore, it can be estimated that Bill did not follow the safe lab procedures.

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Answer:

its b

Explanation:

LOL.....l just did it

Which of the following hormones is currently thought to decrease plasma calcium levels in pregnant women and children? A) CalcitoninB) Thyroid HormonesC) Parathyroid Hormone (PTH)D) Calcitriol

Answers

I'd say it's (A)/ Calcitonin since it actually decreases blood calcium levels by inhibiting stimulating osteoblasts, osteoclasts, and stimulating calcium excertion by the kidneys. I hope this response will help you.

Blood flow is affected by both blood pressure and vessel resistance. a. True b. False

Answers

Answer:

True

Explanation:

Bloodflowisaffectedbybothbloodpressureandvesselresistance.

Final answer:

Blood flow is indeed affected by both blood pressure and vessel resistance. While blood pressure is the force exerted by blood on the vessel walls, vessel resistance is the opposition to flow that blood encounters in vessels. Both factors significantly impact blood flow.

Explanation:

The statement 'Blood flow is affected by both blood pressure and vessel resistance' is true. Blood pressure is the force exerted by the blood against the walls of the blood vessels. The higher your blood pressure, the harder your heart has to work to pump blood. On the other hand, vessel resistance refers to the opposition to flow that the blood encounters in vessels away from the heart. Factors that impact vessel resistance include vessel diameter and blood viscosity. Thus, both blood pressure and vessel resistance play critical roles in affecting blood flow.

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A pipe spilling chemicals from a factory into a river is an example of a point source of pollution true or false?

Answers

true..? im pretty sure

The answer is True I just took the test.

The uniqueness of individual offspring for many animals and plants is the result of a process called _____. mitosis meiosis

Answers

The uniqueness of individual offspring for many animals and plants is the result of a process called Meiosis.

During meiosis , the number of chromosomes in parent cell are reduced by half and produces four gamete cells.

Later on, these chromosomes are mixed into the new offspring, causing it carried out some characteristic from its parents and became a new unique individual.

The answer is meiosis.

An average-sized star that is part of a binary star system runs out of enough hydrogen to carry out fusion. What is likely to happen to the star? It will become a _____.A. neutron star
B. black hole
C. supernova
D. white dwarf

Answers

It will become a b. black hole

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