BIOLOGY MIDDLE SCHOOL

Why is a race car traveling at a constant speed on a circular track an example of an object that is accelerating?A. it is constantly speeding up
B. It is always slowing down
C. its direction is always changing
D. the engine is constantly providing the force to move it around the track

Answers

Answer 1
Answer: C. Because its direction is always changing. It is accelerating because its velocity vector is changing direction

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After a caterpillar eats a leaf, it can convert tge chemical energy into blank energy to help it build a cocoon

Answers

The blank is mechanical. The leaf as their source of food contains mostly of starch and cellulose.

Why do you think the location surrounding the Pacific Ocean is known as the Ring of Fire

Answers

because its edges mark a circle of high volcanic and seismic activity (earthquakes)


hope I helped!

One major biotic factor that affects the health of coral reefs is/are

Answers

Answer:symbiotic algae.

Explanation:
Species of organisms that decrease the population of coral. Another reason (which isn't as biological) is that of a fisherman, or boat that destroys the reef.

Order the DNA discoveries

Answers

Answer:

DNA was discovered in 1869 by Swiss researcher Friedrich Miescher, who was originally trying to study the composition of lymphoid cells (white blood cells). Instead, he isolated a new molecule he called nuclein (DNA with associated proteins) from a cell nucleus.

Explanation:

What is a change in the sequence of DNA base pairs called?

Answers

mutation i think it is right!

In the immune system, which cell is responsible for recongnizing an antigen producing the activating B- cell proteins?A) T- helper cells
B) T- killer cells
C) Phagocytes
D) Lymphocytes

Answers

T killer cells are responsible.
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Many higher organisms must maintain a strict internal temperature. There can be serious consequences if the internal temperature deviates even slightly. What is the name of the process which controls the internal temperature? A) osmosis B) homeostasis C) chemosynthesis D) warm bloodedness