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3 years ago

Fill in the word that best completes each sentence.

Biology

2 answers:

natali 33 [55]3 years ago

7 0

Answer:

Pores, Collar, spicules

Explanation:

cupoosta [38]3 years ago

4 0

Answer: Water is drawn in through small openings on a sponge's body called OSTIA.

The supportive skeleton of a sponge contains SPICULES which provide protection from predators.

Explanation:

Sponges refer to any of the aquatic animals of the phyllum porifera which is normally characterized with porous structures and has horn-like calcareous internal framework.

Sponges usually have multiple pores called "OSTIA" on their bodies that allow water to enter them.

Most sponges are sessile and because of this, they can't run away from predators. They usually have sharp "SPICULES" which are part of their skeleton that provide them some certain degree of defense. Apart from this, they also produce toxins which poisons predators that attempt to consume them

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Directions: identify whether it is biotic or abiotic by writing your answer before the number

BlackZzzverrR [31]

1. Algae- Biotic
2. Abiotic
3. Biotic
4. Abiotic
5. Biotic
6. Abiotic
7. Biotic
8. Biotic
9. Biotic
10. Abiotic
11. Biotic
12. [could be both]

In order to see if something is Biotic or Abiotic, think about whether it’s alive or not.
Dissolve oxygen is just the oxygen levels in the ocean, it’s not really a living thing. While it does effect the environment, it’s abiotic because it isn’t living. Fish, however, are are biotic because they’re alive.

If you’re ever confused, just think about the basic things all living things have, which is cells, and apply it to the question. Does changing weather have cells? Nope. do trees have cells? Yep!

Also, for the Fertile soil, I said it could be both because of what’s in the soil. Fertile soil has biotic factors in it, like dead animal stuff and dead plant stuff. (Anything that was once living, even if it’s dead, is still considered a biotic by the way). I think your best bet would be to put biotic, but I might be wrong
But yeah, in summary, Biotic means living, Abiotic means non living, and in order to see which is which, ask yourself if whatever you’re questioning has cells. Good luck

4 0

2 years ago

Can someone please help me with this pleaseeee!!! 32 points and i'll mark brainliest!!

ivanzaharov [21]

Answer:

IF you dont mark as brainlest im reporting you, heres the answer

Explanation:

Matter cannot be created in chemical reactions, so this is a conversation of mass. In the chemical reaction must end up in the products it started with.

7 0

3 years ago

What would influence a species' physical appearance

Reil [10]

The genes contained in the species' chromosomes would influence a species' physical appearance, would it not?
The alleles that species gains from both parents helps determine what that species physical appearance (also known as the phenotype) would look like.
Hope this explanation helped you. :)

8 0

2 years ago

Census data show that the human population doubled from 2.65 billion in 1953 to 5.3 billion in 1990. If it continues to double a

madam [21]

The question is incomplete, the complete question is;

Census data show that the human population

doubled from 2.65 billion in 1953 to 5.3 billion

in 1990. If it continues to double at this rate,

the human population could reach 10 billion

by the year 2020. Which BEST explains how

this rate of human growth can harm the

environment on which humans depend?

A. by gradually making up more available energy

B. by using resources faster than they can be

replaced

C. by changing how matter cycles through an

ecosystem

D. by increasing the variety of ecosystems that are

Answer:

by using resources faster than they can be

replaced

Explanation:

As population of the world continues to grow, there is greater demands for resources which are obtained from the environment such as crude oil for energy, solid minerals for various applications, wood for furniture etc.

Demand for these materials increase exponentially as population increases thus they are extracted at a faster rate than nature can replace them. This will eventually harm the environment on which humans depend as population increases.

7 0

2 years ago

Read 2 more answers

20. Why are scientific theories changed but never thrown away?

Elis [28]

Scientific Theory change but not thrown away because scientist continue looking for possibilities and exact proportion to prove such theory, though it is change because they always conducted hypnosis in every theory and once it proves something different they conduct another hypothesis for more actual evidence.

7 0

3 years ago