The picture on the left shows how a plant stem looks when sliced open, magnified, and viewed from above. The picture on the right shows a sketch of some structures that are inside every human body.

Each picture shows tubes that run throughout the organism.


What is the main purpose of these tubes?
A.
carrying nutrients and wastes

B.
creating speech

C.
taking in and responding to signals from the environment

D.
making flowers for reproduction

Answer:

The answer is A, carrying nutrients and wastes.

Explanation:

I learned this in 2nd grade! Enjoy your answer! ☆

Read the scientific question below.

"Is air pollution related to lichen growth?"

What is a likely hypothesis for the question? (5 points)

a
Air pollution must affect lichen growth.

b
No, air pollution does not affect lichen growth.

c
If air pollution is high, then lichen growth is high.

d
If air pollution is high, then lung disorder cases are high.

Help if you can please?


Leachate is produced as:


A) Rainwater absorbs water-soluble compounds in layers of trash


B)Toxic waste is emptied into ponds and streams


C) Metal comes into contact with water


D) Plastic flows into ponds and streams

Lesson 3, Interactions among living things


Be able to define and give an example of each.

1. natural selection

2. adaptations

3. niche

4. competition

5. predation, predator, prey

6. symbiosis: mutualism, commensalism, parasitism: parasite and host