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nexus9112 [7]
3 years ago
15

A scientist collected samples of organisms from a local stream. what was the scientist testing?

Biology
1 answer:
11Alexandr11 [23.1K]3 years ago
4 0
They were studying the effects of acid rain on different aquatic organisms 

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Storm winds knock down trees in part of a forest. Which of these effects of
omeli [17]

Answer:

C. Organism living in the fallen trees lose shelter.

Explanation:

talking about the effects of storm winds falling trees, it creates more light to reach shorter plant which will help the plants to do photosynthesis well, which will even facilitate their fast growth; that's positive.

Fallen trees becoming food for decomposers can also be positive cause this will help the soil or earth of that forest have fertility

New Clearing attracting animals such as man can lead to extinction of forest which to conservators they feel like no-no-no-no that's they'd see it as a negative consequence of the wind storm effect, yes this can lead to de-sheltering of organisms inhabiting that niche(trees)

3 0
1 year ago
Read 2 more answers
The cells involved in innate immunity, whose absence increases the chances of developing malignant tumors, are _____.
Alexeev081 [22]

Answer:

The correct option is B (natural killer cells).

Explanation:

Natural killer cells: They are defined as the type of cytotoxic lymphocyte which are critical to the innate immune system. The NK cells play an important role in to provide rapid response to tumor formation, virus infected cells, and acting after three days of infection.

While cancer cells die, they release some antigens, than these antigens are recognized by the immune system, and later they are presented on the immune cells which are known as antigen presenting cells. So, if these cells are absent than they increase the chances of developing malignant tumors.

4 0
3 years ago
Why are ganymede and callisto geologically dead while the other two galilean moons of jupiter are active?
kvasek [131]

Ganymede & Callisto are low-density moons with a mixture of ice and rock. They are farther from Jupiter and are geologically dead.

The four largest moons of Jupiter, Io, Europa, Ganymede, and Callisto, are known as the Galilean moons or Galilean satellites. Galileo Galilei initially observed them in December 1609 or January 1610, and in March 1610, he identified them as Jupiter satellites. They were the first discovered extraterrestrial objects orbiting a planet other than the Earth.

To know more about Jupiter refer:

brainly.com/question/15207516

#SPJ4

5 0
1 year ago
In what type of organs are the cells that enter meiosis 1 found
allsm [11]

Answer:

gonads, ovaries and testes

Explanation:

if im right, can i get the crown

8 0
2 years ago
A student takes four samples of a white crystalline solid and places each in a well plate. On top of each sample, she carefully
DaniilM [7]

Dissolving doe not indicate or guarantee a chemical change.  Most of the time it is a physical change.

Unchanged solid in a liquid does not even indicate any change.

Solid floating on top of liquid does not indicate any change, physical or chemical.

When a mixture creates a new compound (gas from mixing solid and liquid), there is a chemical change.

7 0
3 years ago
Read 2 more answers
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