BIOLOGY HIGH SCHOOL

The first step to begin digestion of food starts with the _____A : mouth

B : Stomach

C : Esophagus

Answers

Answer 1
Answer: mouth its mechanical digestion the ripping and tearing of food
Answer 2
Answer: The first step begins with: A. the mouth.

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The brain communicates with the rest of your body by _____.

Answers

The Central Nervous System is the "highway" in the body through which the brain transmits electrical pulses down the spinal chord to the nerves and organs. The brain sends and transmits these signals to control the functions of the body.Hope this helps. Let me know if you need additional help!
The question says, how does the brain communicate with the rest of the body. The brain communicate with the other parts of the body by sending nerve impulse, which are form of electrical signal which travel throughout the body, carrying messages from the brain to the receptors and the cells of the body which respond appropriately to the signals.

Temperature, sunlight, humidity, water supply, and soil type are called the _____ of an ecosystem.a. abiotic factors
b. biotic factors
c. organimsms
d. species

Answers

Abiotic factors - non-living components of the system.

Algae do not cause disease or not

Answers

algea cannot cause disease, it is found in water areas that is eaten by algea eaters. sp the answer is no

Which of the following is not a means of water erosion? A. Streams
B. Rivers
C. Natural springs
D. Ocean waves

Answers

A means of water erosion would not be C. natural water springs. Erosion occurs when water or wind removes rock, dissolved material, and soil from one location to another. All the other options describe water moving from one location to another, which accurately describes what erosion does. 

What has improved to make scientist better able to understand the cell

Answers

what has improved is an microscope
An microscope is what has improved

Carbon bonding is almost entirely _____.hydrogen

covalent

ionic

chemical

Answers

the answer is A  (HYDROGEN)
the answer would be hydrogen cause its air so hydrogen is what you breath in and carbon out
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