BIOLOGY MIDDLE SCHOOL

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun. What does the force of gravity depend on?

Answers

Answer 1
Answer:

Answer:

Explanation:

In depends on two things:

1. The masses of the objects

2. The distance of the objects between them

Observations.

  • The greater the distance, the smaller the force of gravity.
  • The smaller the distance, the greater the force of gravity.
  • The greater the masses of the objects, the greater the force of gravity.
  • The smaller the masses the smaller the force of gravity.

Related Questions

Which of the following is an example of geographic isolation?A population of salmon dies out because they cannot find food. A zebra with a long mane moves into a population of zebras with short manes. A population of squirrels is separated by a mountain range and cannot interbreed. Two populations of rabbits are forced together after a flood. -- Which of the following statements is true? Extinction speeds up the evolution of other species. Earth has only experienced one mass extinction in its history. Speciation is caused by a reduction in gene flow. Genetic diversity can be increased by genetic drift. ---- Low genetic diversity _____. helps a population survive increases the risk of extinction can cause genetic drift is the result of genetic mutation ----- A species is endangered if it _____. no longer exists anywhere on earth is in danger of becoming extinct is not native the environment has high genetic diversity -- Which of the following statements is true? Gene flow evens out genetic differences between populations. Genetic drift increases the genetic differences between populations. Natural selection, mutation, and genetic drift are random events. The bottleneck effect increases the genetic diversity of a population.
Enzymes are a type of protein found in cells. They catalyze biochemical reactions that are essential for cellular function Each typeof enzyme has a unique structure that is different from every other enzyme. How does this help enzymes perform their function?A. It allows enzymes to change their form based on a given substrateB. It ensures that all enzymes bind to the same substrate,C. It allows each enzyme to catalyze multiple reactionsD. It ensures that enzymes only bind to specific substrates
Name three structures that are most likely found in all fish.
Foods that allow microorganisms to grow are called parasitesTrue Or False
3. How do scientists share their results with the scientific community?

During the early stages of embryo development, dolphins have gill pouches. What does this mean?

Answers

Answer:

This means the dolphin is an vertebrate.

Explanation:

  • Gill pouches are the structures which are present in all vertebrates in the embryonic stages while it is present in fishes and amphibian in later life also.
  • It is thought to be the ancestral structures present in vertebrates. These pouches are then converted to lungs in the later life. For the water animals they are used for respiration.
  • They are actually the muscular walls containing respiratory lamellae on its inner side.
  • Hence in dolphin they are signs that dolphin is an vertebrate.

Answer:

Dolphins having gill pouches would mean that dolphin embryos go through a fish phase during development. Dolphins are closely related so dolphins should go through a fish phase.

Explanation:

HELLPPPPP ASAPPPP !!!!!!!Which layer is between the mesosphere and the inner core?

Asthenosphere
Crust
Lithosphere
Outer Core

Answers

looks like its the asthenosphere hope this picture helps

Identify the original source of energy for all food webs

Answers

the sun is the original source for ALL food webs

What are species of plants and animals that can take over an ecosystem

Answers

Answer:

I think its invasive

Explanation:

White blood cells, part of the ___________ system, work closely with the ___________ system to protect us from infection and disease.A)
circulatory; immune
B)
endocrine; lympathic
C)
circulatory; excretory
Eliminate
D)
circulatory; respiratory

Answers

Answer: The correct answer for the fill in the blank is A) Circulatory, immune.

Circulatory system also called cardiovascular system is a vast network of organs and vessels that allow the circulation of blood so as to transport nutrients, oxygen, other gases, and hormones to different parts of the body.

Blood contains different cells like white blood cells, red blood cells, platelets.

White blood cells ( also called leukocytes) work closely with immune system. They provide defense against pathogen ( disease causing organisms) through various ways ( like ingesting foreign material, producing antibodies to clear the antigens). By doing so, they protect us from infection and disease.
the answer is A)
circulatory; immune

________ are generally considered the best indicators of the level of succession in an ecosystem. Explain how you got your answer.a. fungi b. lichens c. animals d. plants

Answers

Answer:

Plants are generally considered the best indicators of the level of succession in an ecosystem. Explain how you got your answer.

Explanation:

Plants are generally forms the basis of life in any environment, other organism strictly depends for survival and continuation of life as they are the only autotrophs in the food chain. The best indicator of the level of succession in an ecosystem remains the plant
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